The invention relates to a thin sheet, the thickness of which is less than 12.7 mm, having an essentially recrystallized granular structure, made from an aluminum-based alloy comprising 2.5 to 3.5% by weight of Cu, 0.7 to 0.9% by weight of Li, 0.3 to 0.5% by weight of Mg, 0.2 to 0.5 by weight of Mn, 0.25 to 0.65% by weight of Zn, 0.01 to 0.15% by weight of Ti, 0 to 0.07% by weight of Ag, an amount of Fe and of Si of less than or equal to 0.1% by weight each, and inevitable impurities at a content of less than or equal to 0.05% by weight each and 0.15% by weight in total, with the remainder being aluminum.
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
2.
ALUMINIUM-COPPER-LITHIUM ALLOY PRODUCT FOR UNDERWING ELEMENT HAVING IMPROVED PROPERTIES
The invention relates to a novel aluminium-copper-lithium alloy product and to methods for producing same. The product is a rolled product having a final thickness of 15 mm to 50 mm and having a composition, in wt. %, of Cu: 2.3–2.7; Li: 1.3–1.7; Mg: 0.2–0.5; Mn: 0.2–0.5; Ag: 0–0.1; Zn: < 0.20; Ti: 0.01–0.15; Zr: < 0.07; Fe: ≤ 0.1; Si: ≤ 0.1; other elements: ≤ 0.05 each and ≤ 0.15 in total, the remainder being aluminium, and such that the sum of the volume fraction of the texture components Cube {001} <100>, Goss {011} <100> and CG26.5 {021} <100> at mid-thickness is less than or equal to 7.5%. The product can be produced by hot rolling so that the thickness reduction of each of the last two passes is less than or equal to 10 mm, and wherein the final hot rolling temperature is between 400°C and 440°C.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
3.
METAL SHEET FOR A CONTAINER FOR GRANULAR MATERIALS
The invention relates to a method for manufacturing an abrasion-resistant rolled product made of 6XXX-series aluminium alloy, wherein, after hot rolling and cooling to room temperature, the rolled product made of aluminium alloy is not subjected to a solution treatment/quenching, and is not embossed with a raised pattern. The invention also relates to a container for granular materials comprising an abrasion-resistant rolled product obtained by means of the method according to the invention and to the method for manufacturing a container for granular materials. The invention makes it possible to obtain an improved rolled product made of abrasion-resistant aluminium alloy that has satisfactory mechanical properties for this application and a cost-effective manufacturing process.
C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
C22C 21/08 - Alloys based on aluminium with magnesium as the next major constituent with silicon
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
C22F 1/05 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
B60P 1/00 - Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
B60R 13/01 - Liners for load platforms or load compartments
4.
ALUMINUM-COPPER-LITHIUM ALLOY PRODUCT FOR UNDERWING ELEMENT HAVING IMPROVED PROPERTIES
The present invention relates to a rolled product with a thickness of between 15 and 50 mm which is made of aluminum alloy having the following composition, in % by weight: Cu: 2.3 – 2.7; Li: 1.3 - 1.7; Mg: 0.2 - 0.5, Mn: 0.2 – 0.5; Ag: 0 – 0.1; Zn: < 0.20; Ti: 0.01 – 0.15; Zr < 0.07; Fe: < 0.1; Si: < 0.1; other elements < 0.05 each and < 0.15 in total, the remainder being aluminum, wherein the phases having an equivalent diameter of 35 to 500 nm have a mean equivalent diameter of less than or equal to 100 nm. The products according to the invention are obtained by a method in which, in particular, the hot working conditions are such that the final hot working temperature is at least 400°C and that the solution heat treatment of the product comprises a step of at least 15 minutes and less than 8 hours between 540°C and 580°C.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
5.
VERTICAL SEMI-CONTINUOUS CASTING DEVICE AND METHOD FOR MANUFACTURING ALUMINIUM ALLOYS
The invention relates to a vertical semi-continuous casting method with direct cooling of a raw form (5) made of aluminium alloy, such as a rolling plate or an extrusion billet, using a device comprising: an open-ended mould (1) made from at least one hollow element defining at least one peripheral chamber (12) having a solid inner wall (13) which is intended to come into contact with the aluminium alloy and allowing the circulation of a first cooling liquid capable of performing primary cooling; a plurality of spray nozzles (21) integrated into at least one spray bar (2) which is independent of the mould and is capable of performing secondary cooling, independent of the primary cooling, by spraying a second cooling liquid; a false bottom (3), capable of closing the lower portion of the mould at the start of the casting, having an upper portion (31) intended to come into contact with the aluminium alloy and a lower portion (32); and a descender (4) capable of gradually lowering the false bottom during the solidification of the raw form. The method and the device according to the invention solve the problem of distortion when starting the casting process.
B22D 11/00 - Continuous casting of metals, i.e. casting in indefinite lengths
B22D 11/049 - Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for direct chill casting, e.g. electromagnetic casting
The invention relates to a part of battery box for electric or hybrid heavy motor vehicles made from an aluminum alloy plate having a thickness from 6 to 15 mm, wherein said aluminum alloy comprises 4.0 to 5.3 wt.% of Mg, 0.4 to 1.2 wt.% of Mn, 0.5 wt.% or less of Si, 0.5 wt.% or less of Fe, 0.3 wt.% or less of Cu, 0.3 wt.% or less of Cr, 0.5 wt.% or less of Zn, 0.2 wt.% or less of Ti, rest aluminum and unavoidable impurities up to 0.05 wt.% each and 0.15 wt.% total, wherein the plate is in a strain-hardened and partially annealed temper H2X or a stabilized temper H3X. The part of battery box according to the invention exhibit a good balance between, intrusion and corrosion properties.
C22C 21/08 - Alloys based on aluminium with magnesium as the next major constituent with silicon
C22F 1/047 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
H01M 50/233 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by physical properties of casings or racks, e.g. dimensions
H01M 50/24 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
The invention is a rolled and/or forged product, made of an aluminium-based alloy comprising, in % by weight, Cu: 3.2-4.0; Li: 0.80-0.95; Zn: 0.45-0.70; Mg: 0.15-0.7; Zr: 0.07-0.15; Mn: 0.1-0.6; Ag: <0.15; Fe+Si≤0.20; at least one element from Ti: 0.01-0.15; Se: 0.02-0.1; Cr: 0.02-0.1; Hf: 0.02-0.5; V: 0.02-0.1; other elements ≤0.05 each and ≤0.15 in total, remainder aluminium. In the process for manufacturing the products according to the invention a bath of liquid metal based on aluminium as alloy according to the invention is melted, an unwrought product is cast from said bath of liquid metal; said unwrought product is homogenized at a temperature between 450° C. and 550° C.; said unwrought product is hot worked and optionally cold worked preferably to a thickness of at least 15 mm: said product is solution treated between 490° C. and 530° C. for 15 min to 8 h and quenched; said product is drawn in a controlled manner with a permanent deformation of 1% to 7% and a tempering of said product is carried out. The product is advantageous for the manufacture of an aircraft structural component.
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
8.
SUSTAINABLE REMELTING LINE FOR ALUMINIUM ALLOY SCRAP
The invention relates to a scrap remelting line comprising at least one storage silo configured to store scrap, at least two induction furnaces for remelting the scrap and obtaining the remelted liquid metal, a means for supplying the scrap to the at least two induction furnaces, at least one furnace receiving the liquid metal (6), and a means for transporting the remelted liquid metal (5, 15) to the receiving furnace. The invention also relates to the method for obtaining liquid metal from scrap remelted in induction furnaces.
The invention relates to a method for re-melting coated aluminum alloy scrap comprising a step of supplying shredded coated aluminum alloy scrap, consisting of individual entities; a decoating step, a step of preparing a heel, a step of loading and melting the decoated scrap on the heel. The invention is characterized in that the scrap has a specific geometry wherein at least 50% of the individual entities of the shredded coated scrap has a fold ratio (R) of less than or equal to 0.6, wherein the fold ratio (R) of an individual entity is defined by: fold ratio=R=(unfolded area−folded area)/(unfolded area), wherein the folded area is the maximum area of the orthogonal projection of the individual entity onto a plane and the unfolded area is the total area of the same individual entity after it has been unfolded.
The invention relates to a method for melting an aluminum load, comprising: supplying an aluminum load (11, 12, 13) of which at least 15% by weight is in the form of a sow of essentially cylindrical shape (11) of height h and maximum diameter d; loading said load into a cylindrical induction furnace (10) of height H and maximum internal diameter D in which the height direction of said sow is substantially parallel to the height direction of the furnace; melting said load by induction to obtain a liquid metal bath (2); optionally adjusting content of said liquid metal in which d is in the range from 0.7 D to 0.97 D and preferably in the range from 0.84 D to 0.92 D.
C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
C22B 9/00 - General processes of refining or remelting of metalsApparatus for electroslag or arc remelting of metals
F27B 14/06 - Crucible or pot furnacesTank furnaces heated electrically, e.g. induction crucible furnaces, with or without any other source of heat
F27B 14/08 - Details specially adapted for crucible, pot or tank furnaces
F27D 3/00 - ChargingDischargingManipulation of charge
F27D 11/06 - Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
11.
THICK PRODUCT MADE OF ALUMINIUM COPPER LITHIUM ALLOYS WITH IMPROVED TOUGHNESS, AND METHOD FOR OBTAINING SAME
The invention relates to a rolled product which has an improved Rp0.2 (L) – K1c (L-T) compromise, the thickness of which is between 25 mm and 50 mm, and which is made of aluminium alloy with the following composition by weight: - Cu 2.2-3.9 - Li 0.7-1.2 - Mg 0.1-0.8 - Mn 0.1-0.6 - Zr 0.07-0.15 - Ti 0.01-0.15 - Fe <0.1 - Si <0.1% - Ag ≤ 0.40 - Zn ≤ 0.70, other elements <0.05 each and <0.15 in total, the remainder being aluminium, such that, at mid-thickness, the volume fraction of the grains having a brass texture is less than 21%. This product is obtained by a method comprising a step of casting, homogenising, hot rolling, solution heat treating, quenching, and tempering such that, during the hot rolling step, the outlet temperature is between 395 and 445°C.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
12.
METHOD FOR SUSTAINABLY RECYCLING ALUMINIUM ALLOY SCRAP
The invention relates to a method for remelting coated aluminium alloy scrap in an induction furnace having a cylindrical crucible, which comprises steps of supplying crushed coated scrap, delacquering, charging, remelting and holding the crushed coated aluminium alloy scrap, such that at least 50% of the individual entities of the crushed coated scrap have a particle size of between 5 and 25 mm, and a flatness of less than or equal to 10 mm, and wherein the induction furnace is inerted during the charging phase, and wherein the inert gas outlet is located in the quarter of the circular section of the furnace containing the delimited zone in which the scrap falls.
The invention relates to a product made of an aluminium-based alloy comprising, by wt. %, Cu: 2.5-3.4; Li: 1.6-2.2; Mg: 0.4-0.9; Mn: 0.2-0.6, Zr: 0.08-0.18; Zn: <0.4; Ag: <0.15; Fe+Si: S 0.20; at least one element selected from Ti, Se, Cr, Hf and V, the content of the element, if selected, being: Ti: 0.01-0.15; Se: 0.01-0.15; Cr: 0.01-0.3; Hf: 0.01-0.5; V: 0.01-0.3; other elements: S 0.05 each and: S 0.15 in total; the remainder being aluminium. The invention also relates to a method for manufacturing an aluminum alloy-based, extruded, rolled and/or forged product, and a structural element incorporating at least one product as described above.
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
The invention relates to a method for preheating at least one working roll for rolling, involving phases of:
determining a target thermal expansion profile,
determining an effective mean temperature profile of longitudinal segments of the working roll and for determining a target mean temperature profile,
activating a plurality of inductors distributed along the working roll in order to reduce a difference between the effective mean temperature and the target mean temperature.
B21B 27/10 - Lubricating, cooling, or heating rolls externally
B21B 37/32 - Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
15.
7XXX WROUGHT PRODUCTS WITH IMPROVED COMPROMISE OF TENSILE AND TOUGHNESS PROPERTIES AND METHOD FOR PRODUCING
The present invention relates to wrought 7xxx aluminum alloy product comprising in weight % Zn 6.7 – 7.4, Mg 1.35 – 1.75, Cu 1.85 – 2.35, Zr 0.04 – 0.14, Mn 0 – 0.5, Ti 0 – 0.15, V 0 – 0.15, Cr 0 – 0.25, Fe ≤0.05, Si≤0.05 with a Fe+Si ≤ 0.08 % and artificially aged wherein the total equivalent aging time t(eq) at 155°C is comprised from 24 hours to 45 hours which permits to optimize the compromise between tensile yield strength and toughness with improved cryogenic fracture toughness and fatigue resistance in corrosive environment.
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
16.
METHOD FOR CHARACTERISING THE POROSITY OF A PLATE BY MEANS OF HIGH-RESOLUTION ULTRASOUND SCANNING
The invention relates to a method for characterising the porosity of an aluminium alloy plate, the method comprising: a) applying a probe facing the plate; b) activating a transmitting transducer of the probe so that the transducer transmits an incident ultrasonic wave in the direction of the plate; c) detecting, by means of a detecting transducer of the probe, a detection signal that is representative of an ultrasonic wave reflected by the plate as a result of the incident wave; d) repeating steps a) to c) by moving the transmitting transducer and the transmitting transducer along mesh points on the surface; e) on the basis of the detection signals detected in each step c), characterising the porosity of the plate; wherein, in each step b), the acoustic wave is focused at a focusing depth of between 4 mm and 12 mm, and wherein step e) comprises: -e-i) accounting for a minimum amplitude; - e-ii) selecting the detection signals of which the amplitude is greater than the minimum amplitude; - e-iii) determining the presence of a defect (11) when at least one detection signal, corresponding to a point in the mesh, is selected in sub-step e-ii), and wherein sub-step e-iii) comprises determining the presence of a defect when at least two detection signals, corresponding to two adjacent mesh points, are selected in sub-step e-ii). -e-iv) at different points in the mesh, calculating a porosity density indicator, corresponding to a number of defects determined per unit area; - e-v) optionally determining an overall porosity density indicator for the plate according to the porosity density indicators calculated in sub-step e-iv).
A method for thermomechanical treatment of wrought products made of a 2000 series aluminum alloy comprising, in % by weight, Cu 3.5-5.8; Mg 0.2-1.5; Mn≤0.9; Fe≤0.15; Si≤0.15; Zr≤0.25; Ag≤0.8; Zn≤0.8; Ti 0.02-0.15; unavoidable impurities≤0.05 each and ≤0.15 total; remainder aluminum, enabling an improvement in the resistance to corrosion under stress. It includes a tempering consisting of two sequences. The first sequence is defined by a maximum temperature T1max comprised between 130° C. and 180° C. and by a hold time at a temperature comprised between 130° C. and 180° C. which equates to an equivalent duration t1eq160+ C. calculated at 160° C. comprised between 10 h and 80 h. The second sequence is defined by a temperature T2° C.(t) lower than T1max and a hold time t2 at a temperature comprised between 100° C. and 130° C., which equates to an equivalent time t2eq160° C. calculated at 160° C. such that t2eq160° comprised between 0.3% and 15% of the equivalent duration t1eq160° calculated for the first sequence.
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
18.
THICK PLATES MADE OF AL-CU-LI ALLOY WITH IMPROVED FATIGUE PROPERTIES
The invention relates to a rolled product having a thickness of at least 50 mm made of aluminium alloy comprising, in % by weight, 2.2% to 3.9% of Cu, 0.7% to 1.8% of Li, 0.1% to 0.8% of Mg, 0.1% to 0.6% of Mn; 0.01% to 0.15% of Ti, at least one element chosen from Zn and Ag, the amount of said element, if it is chosen, being 0.2% to 0.8% for Zn and 0.1% to 0.5% for Ag, optionally at least one element chosen from Zr, Cr, Sc, Hf, and V, the amount of said element, if it is chosen, being 0.04% to 0.18% for Zr, 0.05% to 0.3% for Cr and for Sc, 0.05% to 0.5% for Hf and for V, less than 0.1% of Fe, less than 0.1% of Si, the remainder being aluminium and inevitable impurities, having a content of less than 0.05% each and 0.15% in total; characterized in that its granular structure is predominantly recrystallised between ¼ and ½ thickness. The invention also relates to the process for manufacturing such a product. The products according to the invention are advantageously used in aircraft construction, in particular for the production of an aircraft wing spar or rib.
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
C22C 21/12 - Alloys based on aluminium with copper as the next major constituent
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
19.
METHOD FOR MANUFACTURING A 7XXX ALUMINUM ALLOY SHEET AND 7XXX ALUMINUM ALLOY SHEET
The present invention relates to sheets with a thickness of between 6 and 25 mm made of aluminum alloy having the following composition, in % by weight: Zn: 4.5 - 7.0; Mg: 1.2 - 3.5; Cu: 1.0 - 3.0; at least one element chosen from Cr: 0.04 - 0.35, Zr: 0.04 - 0.15 and Mn: 0.04 - 0.5; Ti < 0.25; Fe < 0.6; Si < 0.5; other elements < 0.05 each and < 0.15 in total, remainder aluminum, and to the method for manufacturing same. The sheets according to the invention are particularly useful as precision sheets, in particular for producing machine frames, reference plates, transport tables, mounting jigs, and robot arms. The sheets according to the invention have an improved dimensional stability notably during machining steps, while having sufficient static mechanical properties, and good anodizability.
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22C 21/10 - Alloys based on aluminium with zinc as the next major constituent
20.
Sheet metal plate with raised areas for creating industrial flooring with improved adhesive properties
The invention relates to a sheet metal plate (10) for creating flooring (30), in particular for industrial vehicles, having on its upper surface (11) a plurality or raised patterns, each raised pattern comprising one or more protruding portions (20), the raised patterns being arranged periodically, discreetly and in orderly fashion, the height h of the raised patterns being between 0.3 and 3 mm, characterized in that the plate has, on its lower surface (12), which is intended to be bonded to a support member, a rough surface the roughness Rmax of which is between 10 μm and 250 μm. The invention also relates to the method of producing said plate and the use of said sheet metal plate for creating flooring for industrial vehicles, preferably flooring for refrigerated vehicles.
B21B 1/22 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length
B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
21.
METAL SHEETS, MADE OF ALUMINIUM ALLOY, FOR VACUUM CHAMBER ELEMENTS
The invention relates to a method for manufacturing a metal sheet having a final thickness of between 6 and 50 mm, the method comprising the steps of: casting a rolling slab made of aluminium alloy having the following composition in % by weight: Si: 0.6-1.3; Mg: 0.6-1.2; Mn: 0.65-1.0; Fe: 0.04-0.20; Cr ≤ 0.05; Ti ≤ 0.15; Cu ≤ 0.1; other elements < 0.05 each, and < 0.15 in total, the remainder being aluminium; homogenisation; hot rolling; cold rolling; solution heat treatment; quenching; stress-relieving by controlled stretching; and tempering. The products obtained by the method according to the invention are particularly useful for producing vacuum chamber elements because they have sufficient mechanical properties, improved dimensional stability for machining steps, and also optimal suitability for creating oxide layers having high chemical resistance.
C21D 8/02 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
C22C 21/08 - Alloys based on aluminium with magnesium as the next major constituent with silicon
C22F 1/05 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
B01J 3/00 - Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matterApparatus therefor
The invention relates to a metal plate (10) for creating floors, particularly of industrial vehicles, over which trolleys are to run, said plate exhibiting on one side a plurality of patterns, each pattern comprising one or more projecting parts (20) referred to as profiled reliefs, said patterns being arranged periodically, in a discrete and ordered manner, the maximum height (Hmax) of said reliefs being between 0.2 and 1.5 mm, the plate comprising at least 18,000 reliefs per square metre. The invention also relates to the method for producing a plate according to the invention. Use of a plate of the invention to create a floor of a refrigerated vehicle is particularly advantageous.
E04F 15/02 - Flooring or floor layers composed of a number of similar elements
E04F 15/06 - Flooring or floor layers composed of a number of similar elements of metal, whether or not in combination with other material
B21B 1/22 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length
23.
IMPROVED THIN SHEET MADE OF ALUMINIUM-COPPER-LITHIUM ALLOY
The invention relates to a thin sheet, the thickness of which is less than 12.7 mm, having an essentially recrystallised granular structure, made from an aluminium-based alloy comprising 2.5 to 3.5% by weight of Cu, 0.7 to 0.9% by weight of Li, 0.3 to 0.5% by weight of Mg, 0.2 to 0.5% by weight of Mn, 0.25 to 0.65% by weight of Zn, 0.01 to 0.15% by weight of Ti, 0 to 0.07% by weight of Ag, an amount of Fe and of Si of less than or equal to 0.1% by weight each, and inevitable impurities at a content of less than or equal to 0.05% by weight each and 0.15% by weight in total, with the remainder being aluminium.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
24.
IMPROVED THIN SHEET MADE OF ALUMINIUM-COPPER-LITHIUM ALLOY
The invention relates to a thin sheet, the thickness of which is less than 12.7 mm, having an essentially recrystallised granular structure, made from an aluminium-based alloy comprising 2.5 to 3.5% by weight of Cu, 0.7 to 0.9% by weight of Li, 0.3 to 0.5% by weight of Mg, 0.2 to 0.5% by weight of Mn, 0.25 to 0.65% by weight of Zn, 0.01 to 0.15% by weight of Ti, 0 to 0.07% by weight of Ag, an amount of Fe and of Si of less than or equal to 0.1% by weight each, and inevitable impurities at a content of less than or equal to 0.05% by weight each and 0.15% by weight in total, with the remainder being aluminium.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
The invention relates to a product made of an aluminium-based alloy comprising, by wt. %, Cu: 2.4-3.2; Li: 1.6-2.3; Mg: 0.3-0.9; Mn: 0.2-0.6; Zr: 0.12-0.18; such that Zr≥−0.06*Li+0.242; Zn:<1.0; Ag:<0.15; Fe+Si≤0.20; optionally, at least one element selected from Ti, Sc, Cr, Hf and V, the content of the element, if selected, being: Ti: 0.01-0.1; Sc: 0.01-0.15; Cr: 0.01-0.3; Hf: 0.01-0.5; V: 0.01-0.3; other elements ≤0.05 each and ≤0.15 in total; the remainder being aluminium. The invention also relates to a method for manufacturing an as-cast aluminum alloy product according to the invention, comprising the following steps: preparing a liquid metal bath; casting an as-cast shape from said liquid metal bath; and solidifying the as-cast shape into a billet, a rolling plate or a forging blank; characterised in that the casting is performed without adding any grain refiner, or by adding a refiner comprising (i) Ti and (ii) B or C, such that the content of B from the refiner is less than 45 ppm, and that of C is less than 6 ppm, and/or characterised in that the casting is carried out, for an as-cast shape of thickness E or with a diameter D greater than 150 mm, at a casting rate v (mm/min) greater than 30 for a plate-type as-cast shape or 9000/D for a billet-type as-cast shape.
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
26.
USE OF PRODUCTS MADE FROM ALUMINIUM COPPER MAGNESIUM ALLOY THAT PERFORM WELL AT HIGH TEMPERATURE
The invention relates to the use of a wrought aluminum alloy in a T8 temper with the following composition, in wt %, Cu: 3.6-4.4; Mg: 1.2-1.4; Mn: 0.5-0.8; Zr:≤0.15; Ti: 0.01-0.15; Si≤0.20; Fe≤0.20; Zn≤0.25 other elements<0.05; the remainder being aluminum, in an application in which the product is kept at temperatures of between 80° C. and 250° C. for a significant period of at least 200 hours. The products intended for the use according to the invention are particularly useful in an application such as a rotor or another component of an air suction pump such as, in particular, a vacuum pump.
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
27.
SUSTAINABLE REMELTING LINE FOR ALUMINIUM ALLOY SCRAP
The invention relates to a scrap remelting line comprising at least one storage silo configured to store scrap, at least two induction furnaces for remelting the scrap and obtaining the remelted liquid metal, a means for supplying the scrap to the at least two induction furnaces, at least one furnace receiving the liquid metal (6), and a means for transporting the remelted liquid metal (5, 15) to the receiving furnace. The invention also relates to the method for obtaining liquid metal from scrap remelted in induction furnaces.
The invention relates to the method for melting a charge of aluminium, comprising: procuring a charge (11, 12, 13) of aluminium of which at least 15 wt% is in the form of a bowl (11) of essentially cylindrical shape, of height h and maximum diameter d; loading the charge into a cylindrical induction furnace (10) of height H and of maximum inside diameter D, where the height direction of the bowl is substantially parallel to the height direction of the furnace; melting the charge using induction to obtain a bath of liquid metal (2); and optionally adjusting the composition of the liquid metal where d is in the range 0.7D to 0.97D and preferably in the range 0.84D to 0.92D.
F27D 3/00 - ChargingDischargingManipulation of charge
F27D 11/06 - Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
The invention relates to a method for re-melting coated aluminium alloy scrap comprising a step of supplying coated ground aluminium alloy scrap consisting of individual entities; a stripping step; a step of preparing a heel; a step of loading and melting the stripped scrap on the heel. The invention is characterised in that the scrap has a specific geometry, wherein at least 50% of the individual entities of the coated ground scrap has a fold ratio (R) of less than or equal to 0.6, wherein the fold ratio (R) of an individual entity is defined by: fold ratio =R= (unfolded area - folded area)/(unfolded area), wherein the folded area is the maximum area of the orthogonal projection of the individual entity onto a plane and the unfolded area is the total area of the same individual entity after it has been unfolded.
The invention relates to the method for melting a charge of aluminium, comprising: procuring a charge (11, 12, 13) of aluminium of which at least 15 wt% is in the form of a bowl (11) of essentially cylindrical shape, of height h and maximum diameter d; loading the charge into a cylindrical induction furnace (10) of height H and of maximum inside diameter D, where the height direction of the bowl is substantially parallel to the height direction of the furnace; melting the charge using induction to obtain a bath of liquid metal (2); and optionally adjusting the composition of the liquid metal where d is in the range 0.7D to 0.97D and preferably in the range 0.84D to 0.92D.
F27B 14/06 - Crucible or pot furnacesTank furnaces heated electrically, e.g. induction crucible furnaces, with or without any other source of heat
F27B 14/08 - Details specially adapted for crucible, pot or tank furnaces
F27D 3/00 - ChargingDischargingManipulation of charge
F27D 11/06 - Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
31.
SUSTAINABLE REMELTING LINE FOR ALUMINIUM ALLOY SCRAP
The invention relates to a scrap remelting line comprising at least one storage silo configured to store scrap, at least two induction furnaces for remelting the scrap and obtaining the remelted liquid metal, a means for supplying the scrap to the at least two induction furnaces, at least one furnace receiving the liquid metal (6), and a means for transporting the remelted liquid metal (5, 15) to the receiving furnace. The invention also relates to the method for obtaining liquid metal from scrap remelted in induction furnaces.
The invention relates to a rolled product made of aluminum alloy with a thickness of at least 50 mm comprising (in weight %): Zn 6.9-7.5; Mg 1.8-2.2; Cu 1.8-2.2, where the sum Cu+Mg is between 3.8 and 4.2; Zr 0.04-0.14; Mn 0-0.1; Ti 0-0.15; V 0-0.1; Fe≤0.15; If ≤0.15; impurities ≤0.05 each and ≤0.15 total, balance aluminum. The invention also relates to the method of manufacturing such a product. The products according to the invention are particularly advantageous because they have a very favorable compromise between static mechanical strength, toughness and environmental-assisted cracking performance under conditions of high stress and humid environment.
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
The invention relates to a method for preheating at least one working roll for rolling, involving phases of: - determining a target thermal expansion profile, - determining an effective mean temperature profile of longitudinal segments of the working roll and for determining a target mean temperature profile; - activating a plurality of inductors distributed along the working roll in order to reduce a difference between the effective mean temperature and the target mean temperature.
B21B 27/10 - Lubricating, cooling, or heating rolls externally
B21B 37/32 - Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
The present invention relates to plates with a thickness of between 8 and 50 mm and made from aluminum alloy with a composition, as % by weight, Si: 0.7-1.3; Mg: 0.6-1.2; Mn: 0.65-1.0; Fe: 0.05-0.35; at least one element selected from Cr: 0.1-0.3 and Zr: 0.06-0.15; Ti<0.15; Cu<0.4; Zn<0.1; other elements <0.05 each and <0.15 in total, the remainder aluminum, and the method for manufacturing same. The plates according to the invention are particularly useful as precision plates, in particular for producing elements of machines, for example assembly or inspection equipment. The plates according to the invention have improved dimensional stability in particular during the machining steps, while having sufficient static mechanical properties, and excellent suitability for anodizing.
C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
35.
Thick products made of 7XXX alloy and manufacturing process
(d) tempering said solution heat treated and cooled block by heating to 120 to 170° C. for 4 to 48 hours,
In this process, said block is not subjected to any significant deformation by working between the casting and the tempering. The alloy and the method according to the invention are particularly useful for the manufacture of molds for injection-molding plastics.
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
36.
ALUMINUM-COPPER-LITHIUM ALLOY THIN SHEETS WITH IMPROVED TOUGHNESS, AND PROCESS FOR MANUFACTURING AN ALUMINUM-COPPER-LITHIUM ALLOY THIN SHEET
The invention relates to a method for manufacturing a thin sheet made from aluminum-based alloy comprising, as % by weight, 2.2 to 2.7% Cu, 1.3 to 1.6% Li, less than 0.1% Ag, 0.2 to 0.5% Mg, 0.1 to 0.5% Mn, 0.01 to 0.15% Ti, a quantity of Zn of less than 0.3, a quantity of Fe and of Si of less than or equal to 0.1% each, and unavoidable impurities with a content of less than or equal to 0.05% by weight each and 0.15% by weight in total, the remainder aluminum, wherein optionally the hot-rolling input temperature being between 400° C. and 460° C. and the hot-rolling output temperature being less than 300° C. and the mean heating speed during the solution heat treatment is at least approximately 17° C./min between 300° C. and 400° C., aging conditions such that the yield strength in the long-transverse direction Rp0.2 is between 350 and 380 MPa.
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
d) Purifying the circulating gas enriched with dihydrogen in a purification chamber comprising a getter material configured to trap dihydrogen from the circulating gas.
Method for thermomechanical treatment of wrought products made of 2000 series aluminum alloy comprising, in % by weight, Cu 3.5 - 5.8; Mg 0.2 - 1.5; Mn = 0.9; Fe = 0.15; Si = 0.15; Zr = 0.25; Ag = 0.8; Zn = 0.8; Ti 0.02-0.15; unavoidable impurities = 0.05 each and = 0.15 in total; remainder aluminum, enabling an improvement in the stress corrosion resistance. It comprises a tempering consisting of two sequences. The first sequence is defined by a maximum temperature T1max between 130°C and 180°C and by a hold time at a temperature between 130°C and 180°C which equates to an equivalent time (formula i) calculated at 160°C between 10 h and 80 h. The second sequence is defined by a temperature T2°c (t) below T1max and a hold time t2 at a temperature between 100°C and 130°C, which equates to an equivalent time (formula ii) calculated at 160°C such that (formula iii) is between 0.3% and 15% of the equivalent time (formula iv) calculated for the first sequence.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
39.
WROUGHT PRODUCTS MADE OF 2XXX ALLOY HAVING AN OPTIMIZED CORROSION RESISTANCE, AND METHOD FOR OBTAINING SAME
Method for thermomechanical treatment of wrought products made of 2000 series aluminum alloy comprising, in % by weight, Cu 3.5 - 5.8; Mg 0.2 - 1.5; Mn ≤ 0.9; Fe ≤ 0.15; Si ≤ 0.15; Zr ≤ 0.25; Ag ≤ 0.8; Zn ≤ 0.8; Ti 0.02-0.15; unavoidable impurities ≤ 0.05 each and ≤ 0.15 in total; remainder aluminum, enabling an improvement in the stress corrosion resistance. It comprises a tempering consisting of two sequences. The first sequence is defined by a maximum temperature T1maxbetween 130°C and 180°C and by a hold time at a temperature between 130°C and 180°C which equates to an equivalent time (formula i) calculated at 160°C between 10 h and 80 h. The second sequence is defined by a temperature T2°c(t) below T1max and a hold time t2 at a temperature between 100°C and 130°C, which equates to an equivalent time (formula ii) calculated at 160°C such that (formula iii) is between 0.3% and 15% of the equivalent time (formula iv) calculated for the first sequence.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
The invention relates to a sheet metal plate (10) for creating flooring (30), in particular for industrial vehicles, having on its upper surface (11) a plurality of raised patterns, each raised pattern comprising one or more protruding portions (20), the raised patterns being arranged periodically, discreetly and in orderly fashion, the height h of the raised patterns being between 0.3 and 3 mm, characterised in that the plate has, on its lower surface (12), which is intended to be bonded to a support member, a rough surface the roughness Rmax of which is between 10 µm and 250 µm. The invention also relates to the method of producing said plate and the use of said sheet metal plate for creating flooring for industrial vehicles, preferably flooring for refrigerated vehicles.
B21H 8/00 - Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects
B21B 27/00 - RollsLubricating, cooling or heating rolls while in use
B21B 1/22 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length
B44B 5/00 - Machines or apparatus for embossing decorations or marks, e.g. embossing coins
41.
AL-ZN-CU-MG ALLOYS AND THEIR MANUFACTURING PROCESS
The invention relates to a rolled aluminum-based alloy product having a thickness of at least 80 mm comprising, (in weight %): Zn 6.85-7.25, Mg 1.55-1.95, Cu 1.90-2.30, Zr 0.04-0.10, Ti 0-0.15, Fe 0-0.15, Si 0-0.15, other elements ≤0.05 each and ≤0.15 total, remainder Al, wherein at mid-thickness more than 75% of grains are recrystallized or at mid-thickness 30 to 75% of grains are recrystallized and non-recrystallized grains have an aspect ratio in a L/ST cross section less than 3. A process for the manufacture of a rolled aluminum-based alloy product comprises the steps of: (a) casting an ingot made in an alloy according to the invention, (b) conducting an homogenization of the ingot (c) conducting hot rolling of said homogenized ingot in one or more stages by rolling, (d) conducting a solution heat treatment a quench, (e) conducting stress relieving, and, (f) conducting an artificial aging treatment. The products of the invention are suitable for aircraft construction and have advantageous fatigue crack growth properties.
C22C 21/10 - Alloys based on aluminium with zinc as the next major constituent
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
42.
AlMgMn alloy product with improved corrosion resistance
The invention relates to a method for manufacturing an aluminum alloy sheet, wherein an aluminum alloy is prepared with the following composition, in wt %: Mg: 4.0-5.2, Mn: 0.40-1.0, Zn: 0.15-0.40, at least one element selected from Ti, Cr, Cu and Zr, the content of the element, if selected, being 0.01-0.15 for Ti, 0.05-0.25 for Cr, 0.02-0.25 for Cu, 0.05-0.25 for Zr, Fe: <0.40, Si: <0.40, other elements or impurities <0.05 each and <0.15 in total, the remainder being aluminum. A rolling plate is cast by vertical semi-continuous casting, and said optionally homogenised plate is hot-rolled in two successive stages to obtain a sheet. The sheets obtained by the method according to the invention are advantageous, in particular for shipbuilding, since they demonstrate, after being exposed for 7 days to a temperature of 100° C., a weight loss of less than 15 mg/cm2 during a corrosion test according to the ASTM G67 standard.
B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
C22C 21/08 - Alloys based on aluminium with magnesium as the next major constituent with silicon
C22F 1/047 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
43.
Method for testing a damage tolerance property of a part made of an aluminium alloy
The invention relates to a thin metal sheet which is made of an alloy based on substantially recrystallized aluminum and which has a thickness of 0.25 to 12 mm, the alloy comprising, in percent by weight, Cu 3.4-4.0; Mg 0.5-0.8; Mn 0.1-0.7; Fe #0.15; Si #0.15; Zr #0.04; Ag #0.65; Zn #0.5; inevitable impurities #0.05 each and #0.15 in total, the remainder consisting of aluminum. The invention also relates to a process for manufacturing such a metal sheet and to the use thereof as a fuselage panel or sheet metal for the production of composite products such as fiber metal laminates (FML) for wing or fuselage applications in the aeronautical industry.
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/05 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
45.
USE OF PRODUCTS MADE FROM ALUMINIUM COPPER MAGNESIUM ALLOY THAT PERFORM WELL AT HIGH TEMPERATURE
The invention relates to the use of a wrought T8 aluminium alloy product with the following composition, in wt%, Cu: 3.6 4.4; Mg: 1.2 1.4; Mn: 0.5 0.8; Zr: = 0.15; Ti: 0.01 0.15; Si = 0.20; Fe = 0.20; Zn = 0.25; other elements < 0.05; the remainder being aluminium, in an application in which the product is kept at temperatures of between 80°C and 250°C for a significant period of at least 200 hours. The products intended for the use according to the invention are particularly useful in an application such as a rotor or another component of an air suction pump such as, in particular, a vacuum pump.
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
F04D 19/04 - Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
The invention relates to the use of a wrought T8 aluminium alloy product with the following composition, in wt%, Cu: 3.6 – 4.4; Mg: 1.2 – 1.4; Mn: 0.5 – 0.8; Zr: ≤ 0.15; Ti: 0.01 – 0.15; Si ≤ 0.20; Fe ≤ 0.20; Zn ≤ 0.25; other elements < 0.05; the remainder being aluminium, in an application in which the product is kept at temperatures of between 80°C and 250°C for a significant period of at least 200 hours. The products intended for the use according to the invention are particularly useful in an application such as a rotor or another component of an air suction pump such as, in particular, a vacuum pump.
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
F04D 19/04 - Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
The invention concerns a method for manufacturing a thin sheet made of aluminium-based alloy comprising, in percent by weight, 2.3 to 2.7% Cu, 1.3 to 1.6% Li, 0.2 to 0.5% Mg, 0.1 to 0.5% Mn, 0.01 to 0.15% Ti, a quantity of Zn less than 0.3, a quantity of Fe and of Si less than or equal to 0.1% each, and unavoidable impurities at a content less than or equal to 0.05% by weight each and 0.15% by weight in total, wherein, in particular, the hot-rolling input temperature is between 400° C. and 445° C. and the hot-rolling output temperature is less than 300° C. The sheets according to the invention have advantageous mechanical properties and are used, in particular, for the manufacture of aircraft fuselage panels.
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
48.
ALUMINUM-COPPER-LITHIUM ALLOY HAVING IMPROVED COMPRESSIVE STRENGTH AND IMPROVED TOUGHNESS
The invention relates to a product based on an aluminium alloy comprising, as percentages by weight, 4.0 to 4.6% by weight of Cu, 0.7 to 1.2% by weight of Li, 0.5 to 0.65% by weight of Mg, 0.10 to 0.20% by weight of Zr, 0.15 to 0.30% by weight of Ag, 0.25 to 0.45% by weight of Zn, 0.05 to 0.35% by weight of Mn, at most 0.20% by weight of Fe+Si, at least one element selected from Cr, Sc, Hf, V and Ti, the amount of said element, if selected, being from 0.05 to 0.3% by weight for Cr and for Sc, 0.05 to 0.5% by weight for Hf and for V and 0.01 to 0.15% by weight for Ti, the other elements being at most 0.05% by weight each and 0.15% by weight in total, the remainder being aluminium. The invention also relates to a method for obtaining such a product and to the use thereof as an aircraft structural element.
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
49.
Process for manufacturing a bimetallic part using a dilation-causing thermal treatment
A process for manufacturing a bimetallic part by means of a first component formed by a first aluminum alloy and a second component formed by a second aluminum alloy, said process involving: assembling the first component and the second component to obtain an assembled part; applying a thermal treatment to the assembled part at a temperature of 100 to 250° C., the thermal treatment causing the assembled part to deform, in particular as a result of a metallurgical deformation by a precipitation of hardening phases of the first component and/or the second component; cooling the part to ambient temperature, upon which the part remains deformed. The process involves, prior to the assembling step, an estimation of the degree of deformation that the assembled part will undergo under the effect of the thermal treatment.
C21D 9/50 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for welded joints
B23K 20/233 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
G16C 60/00 - Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation
B23K 101/00 - Articles made by soldering, welding or cutting
The invention relates to a manufacturing method in which an alloy is prepared that comprises 3.5 to 4.7 wt % of Cu; 0.6 to 1.2 wt % of Li; 0.2 to 0.8 wt % of Mg; 0.1 to 0.2 wt % of Zr; 0.0 to 0.3 wt % of Ag; 0.0 to 0.8 wt % of Zn; 0.0 to 0.5 wt % of Mn; at most 0.20 wt % of Fe+Si; optionally an element selected from Cr, Sc, Hf and V, the amount of said element, if selected, being from 0.05 to 0.3 wt % for Cr and for Sc, 0.05 to 0.5 wt % for Hf and for V; the other elements being at most 0.05 wt % each and 0.15 wt % in total, a refiner is introduced, the alloy is cast in a crude form, homogenized, hot-worked, solution heat-treated, quenched, cold-worked, and tempered, in which the refiner contains particles of TiC and/or the cold working is between 8 and 16%. The products obtained by the method according to the invention have an advantageous compromise between mechanical strength and toughness.
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
51.
ALUMINUM-COPPER-LITHIUM ALLOY THIN SHEETS WITH IMPROVED TOUGHNESS, AND PROCESS FOR MANUFACTURING AN ALUMINUM-COPPER-LITHIUM ALLOY THIN SHEET
The invention relates to a process for manufacturing a thin sheet made of an aluminum-based alloy comprising, in percent by weight, 2.2 to 2.7% Cu,1.3 to 1.6% Li, less than 0.1% Ag, 0.2 to 0.5% Mg, 0.1 to 0.5% Mn, 0.01 to 0.15% Ti, less than 0.3% Zn, no more than 0.1% Fe and no more than 0.1% Si, and inevitable impurities at a content of no more than 0.05% by weight each and 0.15% by weight in total, the remainder being aluminum, wherein, in particular, the hot-rolling input temperature is between 400°C and 460°C and the hot-rolling output temperature is less than 300°C, the mean heating rate during the solution heat treatment is at least approximately 17°C/min between 300°C et 400°C, and the tempering conditions such as the 0.2% offset yield strength in the transverse direction Rp0.2(TL) ranges from 350 to 380 MPa. The sheets according to the invention have advantageous mechanical properties and are used in particular for manufacturing aircraft fuselage panels.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
52.
ALUMINUM-COPPER-LITHIUM ALLOY THIN SHEETS WITH IMPROVED TOUGHNESS, AND PROCESS FOR MANUFACTURING AN ALUMINUM-COPPER-LITHIUM ALLOY THIN SHEET
The invention relates to a process for manufacturing a thin sheet made of an aluminum-based alloy comprising, in percent by weight, 2.2 to 2.7% Cu,1.3 to 1.6% Li, less than 0.1% Ag, 0.2 to 0.5% Mg, 0.1 to 0.5% Mn, 0.01 to 0.15% Ti, less than 0.3% Zn, no more than 0.1% Fe and no more than 0.1% Si, and inevitable impurities at a content of no more than 0.05% by weight each and 0.15% by weight in total, the remainder being aluminum, wherein, in particular, the hot-rolling input temperature is between 400°C and 460°C and the hot-rolling output temperature is less than 300°C, the mean heating rate during the solution heat treatment is at least approximately 17°C/min between 300°C et 400°C, and the tempering conditions such as the 0.2% offset yield strength in the transverse direction Rp0.2(TL) ranges from 350 to 380 MPa. The sheets according to the invention have advantageous mechanical properties and are used in particular for manufacturing aircraft fuselage panels.
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
53.
Aluminium alloy vacuum chamber elements stable at high temperature
, measured in plane L/TC according to standard ASTM E112, is at least equal to 350 μm between surface and ½ thickness. The invention also relates to the method of manufacturing of such a vacuum chamber element. The products according to the invention are particularly advantageous, particularly in terms of resistance to creep deformation at high temperature, while having high properties of corrosion resistance, homogeneity of properties in thickness and machinability.
C22C 21/08 - Alloys based on aluminium with magnesium as the next major constituent with silicon
C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
C22F 1/05 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
C25D 11/08 - Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
C25D 11/10 - Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids
The present invention relates to plates with a thickness of between 8 and 50 mm made of aluminum alloy having the following composition, in % by weight: Si: 0.7 - 1.3; Mg: 0.6 - 1.2; Mn: 0.65 - 1.0; Fe: 0.05 - 0.35; at least one element chosen from Cr: 0.1 - 0.3 and Zr: 0.06 - 0.15; Ti < 0.15; Cu < 0.4; Zn < 0.1; other elements < 0.05 each and < 0.15 in total, remainder aluminum and to the method for manufacturing same. The plates according to the invention are particularly useful as precision plates, notably for the production of machine elements, for example assembly or control tools. The plates according to the invention have an improved dimensional stability notably during machining steps, while having sufficient static mechanical properties, and an excellent anodizability.
C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
C22C 21/08 - Alloys based on aluminium with magnesium as the next major constituent with silicon
C22F 1/05 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
The invention is a method for treating a solid substrate, made from a first material, of metal or ceramic type, the method comprising placing the substrate in contact with a liquid metal, while the substrate is exposed to an ultrasonic wave called a power wave. At the level of a surface of the substrate, the power density is greater than a cavitation threshold of the liquid metal. Such exposure improves the wettability of the substrate surface by the liquid metal.
C23C 2/32 - Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shapeApparatus therefor using vibratory energy applied to the bath or substrate
The subject of the invention is a process for manufacturing a wrought product made of aluminum alloy comprising the following steps: a) casting a plate made of alloy comprising, in percentages by weight, Cu: 2.1 to 2.8; Li: 1.1 to 1.7; Mg: 0.2 to 0.9; Mn: 0.2 to 0.6; Ti: 0.01-0.2; Ag<0.1; Zr<0.08; Fe and Si #0.1 each; unavoidable impurities #0.05% each and 0.15% in total; remainder aluminum; b) homogenizing said plate at 480-520° C. for 5 to 60 hours; c) hot-rolling and optionally cold-rolling said homogenized plate to give a sheet; d) solution annealing the sheet at 470-520° C. for 5 minutes to 4 hours; e) quenching the solution-annealed sheet; f) controlled tensioning of the solution-annealed and quenched sheet with a permanent set of 1 to 6%; g) tempering of the tensioned sheet by heating at a temperature of at least 160° C. for a maximum time of 30 hours.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C21D 8/02 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
57.
Aluminum-copper-lithium alloy product for a lower wing skin element with improved properties
The invention relates to a method for manufacturing a laminated or forged material, the thickness of which is 14 to 100 mm. The materials according to the invention are particularly suitable for manufacturing airplane underwing elements.
B64C 3/26 - Construction, shape, or attachment of separate skins, e.g. panels
C22C 21/12 - Alloys based on aluminium with copper as the next major constituent
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
Device for degassing liquid metal comprising an enclosure containing a bath of liquid metal, a device for circulating a gas through a purification chamber and in that the purification chamber comprises a getter material configured to trap the dihyrogen of the circulating gas. Method for degassing a bath of liquid metal in order to reduce the hydrogen concentration of the liquid metal, comprising the following steps a) producing a bath of liquid metal, preferably an aluminum alloy, b) circulating a gas, c) exchanging hydrogen from the circulating gas with the liquid metal so that the hydrogen dissolved in the bath of liquid metal diffuses into the circulating gas and enriches the circulating gas in dihydrogen, d) purifying the circulating gas enriched in dihydrogen in a purification chamber comprising a getter material configured to trap the dihydrogen of the circulating gas.
Device for degassing liquid metal comprising an enclosure containing a bath of liquid metal, a device for circulating a gas through a purification chamber and in that the purification chamber comprises a getter material configured to trap the dihyrogen of the circulating gas. Method for degassing a bath of liquid metal in order to reduce the hydrogen concentration of the liquid metal, comprising the following steps a) producing a bath of liquid metal, preferably an aluminum alloy, b) circulating a gas, c) exchanging hydrogen from the circulating gas with the liquid metal so that the hydrogen dissolved in the bath of liquid metal diffuses into the circulating gas and enriches the circulating gas in dihydrogen, d) purifying the circulating gas enriched in dihydrogen in a purification chamber comprising a getter material configured to trap the dihydrogen of the circulating gas.
The invention concerns a method for checking a damage tolerance property of a part made of aluminium alloy, comprising the following steps: - measuring at least one property representative of a tensile strength of the part; - using the property measured during step a) as input data (x,) of a neural network estimator; - estimating, using the estimator, the property representative of a tensile strength of the part; the method being characterised in that it comprises: - taking account of an acceptance threshold and comparing the property estimated during step c) with the acceptance threshold, taking into account a confidence interval; and - as a function of the comparison: - considering that the part satisfies the check; - or considering that the part does not satisfy the check.
The invention relates to a rolled aluminum-based alloy product having a thickness of at least 80 mm comprising, (in weight %) : Zn 6.85 7.25, Mg 1.55 1.95, Cu 1.90 2.30, Zr 0.04 0.10, Ti 0 0.15, Fe 0 0.15, Si 0 0.15, other elements = 0.05 each and = 0.15 total, remainder Al, wherein at mid-thickness more than 75 % of grains are recrystallized or at mid-thickness 30 to 75 % of grains are recrystallized and non- recrystallized grains have an aspect ratio in a L/ST cross section less than 3. A process for the manufacture of a rolled aluminum-based alloy product comprises the steps of: (a) casting an ingot made in an alloy according to the invention, (b) conducting an homogenization of the ingot (c) conducting hot rolling of said homogenized ingot in one or more stages by rolling, (d) conducting a solution heat treatment a quench, (e) conducting stress relieving, and, (f) conducting an artificial aging treatment. The products of the invention are suitable for aircraft construction and have advantageous fatigue crack growth properties.
C22C 21/10 - Alloys based on aluminium with zinc as the next major constituent
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
62.
AL- ZN-CU-MG ALLOYS AND THEIR MANUFACTURING PROCESS
The invention relates to a rolled aluminum-based alloy product having a thickness of at least 80 mm comprising, (in weight %) : Zn 6.85 – 7.25, Mg 1.55 – 1.95, Cu 1.90 – 2.30, Zr 0.04 – 0.10, Ti 0 – 0.15, Fe 0 – 0.15, Si 0 – 0.15, other elements ≤ 0.05 each and ≤ 0.15 total, remainder Al, wherein at mid-thickness more than 75 % of grains are recrystallized or at mid-thickness 30 to 75 % of grains are recrystallized and non- recrystallized grains have an aspect ratio in a L/ST cross section less than 3. A process for the manufacture of a rolled aluminum-based alloy product comprises the steps of: (a) casting an ingot made in an alloy according to the invention, (b) conducting an homogenization of the ingot (c) conducting hot rolling of said homogenized ingot in one or more stages by rolling, (d) conducting a solution heat treatment a quench, (e) conducting stress relieving, and, (f) conducting an artificial aging treatment. The products of the invention are suitable for aircraft construction and have advantageous fatigue crack growth properties.
C22C 21/10 - Alloys based on aluminium with zinc as the next major constituent
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
63.
ALUMINUM ALLOY COMPRISING LITHIUM WITH IMPROVED FATIGUE PROPERTIES
An aluminium alloy comprising lithium with improved mechanical strength and toughness. The invention relates to a 2XXX wrought alloy product comprising from 0.05 to 1.9% by weight of Li and from 0.005 to 0.045% by weight of Cr and/or of V. The invention also relates to an as-cast 2XXX alloy product comprising from 0.05 to 1.9% by weight of Li and from 0.005 to 0.045% by weight of Cr and/or of V. Finally, the invention relates to an aircraft structure element, preferably a lower surface or upper surface element, the skin and stiffeners of which originate from the same starting material, a spar or a rib, comprising a wrought product.
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
64.
Al—Zn—Cu—Mg alloys and their manufacturing process
The invention concerns an extruded, rolled and/or forged aluminum-based alloy product having a thickness of at least 25 mm comprising (in weight %): Zn 6.70-7.40; Mg 1.50-1.80; Cu 2.20-2.60, with a Cu to Mg ratio of at least 1.30; Zr 0.04-0.14; Mn 0-0.5; Ti 0-0.15; V 0-0.15; Cr 0-0.25; Fe 0-0.15; Si 0-0.15; impurities ≤0.05 each and ≤0.15 total. The invention also concerns a method of making such a product. Products according to the invention are particularly advantageous because they exhibit simultaneously a low sensitivity to environmentally assisted cracking under conditions of high stress and humid environment, high strength and high toughness properties.
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
C22C 21/10 - Alloys based on aluminium with zinc as the next major constituent
65.
THIN SHEETS MADE OF ALUMINIUM-COPPER-LITHIUM ALLOY FOR AIRCRAFT FUSELAGE MANUFACTURE
A method for manufacturing a brushed rolled product made from Al—Cu—Li alloy with a thickness of less than 12 mm, including the steps of producing a rolled product, solution heat treatment and quenching, stress relieving, optionally tempering, and brushing, wherein the brushing tool applies a force to the rolled product generating residual compressive stresses at the surface of the brushed product; eliminates a thickness of at least 9 μm from the surface of the non-brushed rolled product; wherein the brushing step comprises at least one circular brushing motion. The rolled product obtained by the method according to the invention is advantageous. The use of such a product in an aircraft fuselage panel is advantageous.
B24B 29/00 - Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
B24B 39/00 - Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zoneAccessories therefor
B24B 39/06 - Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zoneAccessories therefor designed for working plane surfaces
C22C 21/12 - Alloys based on aluminium with copper as the next major constituent
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
B64C 1/00 - FuselagesConstructional features common to fuselages, wings, stabilising surfaces or the like
66.
METAL SHEET MADE OF HIGH-STRENGTH 2XXX ALLOY FOR AN AIRCRAFT FUSELAGE
The invention relates to a thin metal sheet which is made of an alloy based on substantially recrystallized aluminum and which has a thickness of 0.25 to 12 mm, the alloy comprising, in percent by weight, Cu 3.4-4.0; Mg 0.50.8; Mn 0.10.7; Fe = 0.15; Si = 0.15; Zr = 0.04; Ag = 0.65; Zn = 0.5; inevitable impurities = 0.05 each and = 0.15 in total, the remainder consisting of aluminum. The invention also relates to a process for manufacturing such a metal sheet and to the use thereof as a fuselage panel or sheet metal for the production of composite products such as fiber metal laminates (FML) for wing or fuselage applications in the aeronautical industry.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
67.
METAL SHEET MADE OF HIGH-STRENGTH 2XXX ALLOY FOR AN AIRCRAFT FUSELAGE
The invention relates to a thin metal sheet which is made of an alloy based on substantially recrystallized aluminum and which has a thickness of 0.25 to 12 mm, the alloy comprising, in percent by weight, Cu 3.4-4.0; Mg 0.5–0.8; Mn 0.1–0.7; Fe ≤ 0.15; Si ≤ 0.15; Zr ≤ 0.04; Ag ≤ 0.65; Zn ≤ 0.5; inevitable impurities ≤ 0.05 each and ≤ 0.15 in total, the remainder consisting of aluminum. The invention also relates to a process for manufacturing such a metal sheet and to the use thereof as a fuselage panel or sheet metal for the production of composite products such as fiber metal laminates (FML) for wing or fuselage applications in the aeronautical industry.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
68.
ALMGMN ALLOY PRODUCT WITH IMPROVED CORROSION RESISTANCE
The invention relates to a method for manufacturing an aluminium alloy sheet, wherein an aluminium alloy is prepared with the following composition, in wt%: Mg: 4.0 - 5.2, Mn: 0.40 - 1.0, Zn: 0.15 - 0.40, at least one element selected from Ti, Cr, Cu and Zr, the content of the element, if selected, being 0.01 - 0.15 for Ti, 0.05 - 0.25 for Cr, 0.02 - 0.25 for Cu, 0.05 - 0.25 for Zr, Fe: < 0.40, Si: < 0.40, other elements or impurities < 0.05 each and < 0.15 in total, the remainder being aluminium. A rolling plate is cast by vertical semi-continuous casting, and said optionally homogenised plate is hot-rolled in two successive stages to obtain a sheet. The sheets obtained by the method according to the invention are advantageous, in particular for shipbuilding, since they demonstrate, after being exposed for 7 days to a temperature of 100°C, a weight loss of less than 15 mg/cm2 during a corrosion test according to the ASTM G67 standard.
C22C 21/06 - Alloys based on aluminium with magnesium as the next major constituent
B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
C22F 1/047 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
The invention relates to a product made of an aluminium-based alloy comprising, by wt. %, Cu: 2.4-3.2; Li: 1.6-2.3; Mg: 0.3-0.9; Mn: 0.2-0.6; Zr: 0.12-0.18; such that Zr≥−0.06 *Li+0.242; Zn: <1.0; Ag: <0.15; Fe+Si≤0.20; optionally, at least one element selected from Ti, Sc, Cr, Hf and V, the content of the element, if selected, being: Ti: 0.01-0.1; Sc: 0.01-0.15; Cr: 0.01-0.3; Hf: 0.01-0.5; V: 0.01-0.3; other elements ≤0.05 each and ≤0.15 in total; the remainder being aluminium. The invention also relates to a method for manufacturing an as-cast aluminum alloy product according to the invention, comprising the following steps: preparing a liquid metal bath; casting an as-cast shape from said liquid metal bath; and solidifying the as-cast shape into a billet, a rolling plate or a forging blank; characterised in that the casting is performed without adding any grain refiner, or by adding a refiner comprising (i) Ti and (ii) B or C, such that the content of B from the refiner is less than 45 ppm, and that of C is less than 6 ppm, and/or characterised in that the casting is carried out, for an as-cast shape of thickness E or with a diameter D greater than 150 mm, at a casting rate v (mm/min) greater than 30 for a plate-type as-cast shape or 9000/D for a billet-type as-cast shape.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
70.
PROCESS FOR MANUFACTURING A BIMETALLIC PART USING A DILATION-CAUSING THERMAL TREATMENT
The invention relates to a process for manufacturing a bimetallic part by means of a first component formed by a first aluminum alloy and a second component formed by a second aluminum alloy, said process involving the following steps: - assemble the first component and the second component so as to obtain an assembled part; - applying a thermal treatment to the assembled part at a temperature of 100 to 250°C, the thermal treatment causing the assembled part to deform, in particular as a result of a metallurgical deformation by a precipitation of hardening phases of the first component and/or the second component; - cooling the part to ambient temperature, upon which the part remains deformed. The disclosed process is characterized in that it involves, prior to the assembling step, an estimation of the degree of deformation that the assembled part will undergo under the effect of the thermal treatment.
C21D 9/50 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for welded joints
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
B23K 20/12 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by frictionFriction welding
The invention concerns a method for manufacturing a thin sheet made of aluminium-based alloy comprising, in per cent by weight, 2.3 to 2.7% Cu,1.3 to 1.6% Li, 0.2 to 0.5% Mg, 0.1 to 0.5% Mn, 0.01 to 0.15% Ti, a quantity of Zn less than 0.3, a quantity of Fe and of Si less than or equal to 0.1% each, and unavoidable impurities at a content less than or equal to 0.05% by weight each and 0.15% by weight in total, wherein, in particular, the hot-rolling input temperature is between 400°C and 445°C and the hot-rolling output temperature is less than 300°C. The sheets according to the invention have advantageous mechanical properties and are used, in particular, for the manufacture of aircraft fuselage panels.
C22C 21/12 - Alloys based on aluminium with copper as the next major constituent
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
72.
THIN SHEETS MADE OF ALUMINIUM-COPPER-LITHIUM ALLOY FOR AIRCRAFT FUSELAGE MANUFACTURE
The invention concerns a method for manufacturing a thin sheet made of aluminium-based alloy comprising, in per cent by weight, 2.3 to 2.7% Cu,1.3 to 1.6% Li, 0.2 to 0.5% Mg, 0.1 to 0.5% Mn, 0.01 to 0.15% Ti, a quantity of Zn less than 0.3, a quantity of Fe and of Si less than or equal to 0.1% each, and unavoidable impurities at a content less than or equal to 0.05% by weight each and 0.15% by weight in total, wherein, in particular, the hot-rolling input temperature is between 400°C and 445°C and the hot-rolling output temperature is less than 300°C. The sheets according to the invention have advantageous mechanical properties and are used, in particular, for the manufacture of aircraft fuselage panels.
C22C 21/12 - Alloys based on aluminium with copper as the next major constituent
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
73.
METHOD FOR MANUFACTURING AN ALUMINUM-COPPER-LITHIUM ALLOY HAVING IMPROVED COMPRESSIVE STRENGTH AND IMPROVED TOUGHNESS
The invention relates to a manufacturing method in which an alloy is prepared that comprises 3.5 to 4.7 wt% of Cu; 0.6 to 1.2 wt% of Li; 0.2 to 0.8 wt% of Mg; 0.1 to 0.2 wt% of Zr; 0.0 to 0.3 wt% of Ag; 0.0 to 0.8 wt% of Zn; 0.0 to 0.5 wt% of Mn; at most 0.20 wt% of Fe + Si; optionally an element selected from Cr, Sc, Hf and V, the amount of said element, if selected, being from 0.05 to 0.3 wt% for Cr and for Sc, 0.05 to 0.5 wt% for Hf and for V; the other elements being at most 0.05 wt% each and 0.15 wt% in total, a refiner is introduced, the alloy is cast in a crude form, homogenized, hot-worked, solution heat-treated, quenched, cold-worked, and tempered, in which the refiner contains particles of TiC and/or the cold working is between 8 and 16%. The products obtained by the method according to the invention have an advantageous compromise between mechanical strength and toughness.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
74.
ALLIAGE ALUMINIUM CUIVRE LITHIUM A RESISTANCE EN COMPRESSION ET TENACITE AMELIOREES
The invention relates to a product based on an aluminium alloy comprising, as percentages by weight, 4.0 to 4.6% by weight of Cu, 0.7 to 1.2% by weight of Li, 0.5 to 0.65% by weight of Mg, 0.10 to 0.20% by weight of Zr, 0.15 to 0.30% by weight of Ag, 0.25 to 0.45% by weight of Zn, 0.05 to 0.35% by weight of Mn, at most 0.20% by weight of Fe + Si, at least one element selected from Cr, Sc, Hf, V and Ti, the amount of said element, if selected, being from 0.05 to 0.3% by weight for Cr and for Sc, 0.05 to 0.5% by weight for Hf and for V and 0.01 to 0.15% by weight for Ti, the other elements being at most 0.05% by weight each and 0.15% by weight in total, the remainder being aluminium. The invention also relates to a method for obtaining such a product and to the use thereof as an aircraft structural element.
C22C 21/12 - Alloys based on aluminium with copper as the next major constituent
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
75.
ALUMINIUM-COPPER-LITHIUM ALLOY HAVING IMPROVED COMPRESSIVE STRENGTH AND IMPROVED TOUGHNESS
The invention relates to a product based on an aluminium alloy comprising, as percentages by weight, 4.0 to 4.6% by weight of Cu, 0.7 to 1.2% by weight of Li, 0.5 to 0.65% by weight of Mg, 0.10 to 0.20% by weight of Zr, 0.15 to 0.30% by weight of Ag, 0.25 to 0.45% by weight of Zn, 0.05 to 0.35% by weight of Mn, at most 0.20% by weight of Fe + Si, at least one element selected from Cr, Sc, Hf, V and Ti, the amount of said element, if selected, being from 0.05 to 0.3% by weight for Cr and for Sc, 0.05 to 0.5% by weight for Hf and for V and 0.01 to 0.15% by weight for Ti, the other elements being at most 0.05% by weight each and 0.15% by weight in total, the remainder being aluminium. The invention also relates to a method for obtaining such a product and to the use thereof as an aircraft structural element.
C22C 21/12 - Alloys based on aluminium with copper as the next major constituent
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
76.
METHOD FOR MANUFACTURING AN ALUMINUM-COPPER-LITHIUM ALLOY WITH IMPROVED COMPRESSIVE STRENGTH AND IMPROVED TOUGHNESS
The invention relates to a manufacturing method in which an alloy is prepared that comprises 3.5 to 4.7 wt% of Cu; 0.6 to 1.2 wt% of Li; 0.2 to 0.8 wt% of Mg; 0.1 to 0.2 wt% of Zr; 0.0 to 0.3 wt% of Ag; 0.0 to 0.8 wt% of Zn; 0.0 to 0.5 wt% of Mn; at most 0.20 wt% of Fe + Si; optionally an element selected from Cr, Sc, Hf and V, the amount of said element, if selected, being from 0.05 to 0.3 wt% for Cr and for Sc, 0.05 to 0.5 wt% for Hf and for V; the other elements being at most 0.05 wt% each and 0.15 wt% in total, a refiner is introduced, the alloy is cast in a crude form, homogenized, hot-worked, solution heat-treated, quenched, cold-worked, and tempered, in which the refiner contains particles of TiC and/or the cold working is between 8 and 16%. The products obtained by the method according to the invention have an advantageous compromise between mechanical strength and toughness.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
The invention relates to an aluminium-composite hybrid part comprising a stack of layers formed by alternating metallic layers made of an aluminium alloy and composite layers, characterized in that at least one of the layers is a metallic layer that is less than 1 mm thick and is made of an aluminium alloy, referred to as alloy of interest, belonging to the 6xxx series and containing between 0.6 and 1.5 % by weight silicon and between 0.4 and 1.2 % by weight magnesium, the percentage by weight of silicon being greater than that of magnesium. The invention also relates to an aircraft structural element comprising at least the above aluminium-composite hybrid part, and to a method of producing said aluminium-composite hybrid part, which includes at least one step of machining at least one layer made of the aluminium alloy of interest until it is less than 1 mm thick.
B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
B32B 15/20 - Layered products essentially comprising metal comprising aluminium or copper
B32B 15/04 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
B32B 15/14 - Layered products essentially comprising metal next to a fibrous or filamentary layer
C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
C22C 21/08 - Alloys based on aluminium with magnesium as the next major constituent with silicon
78.
IMPROVED PROCESS FOR MANUFACTURING SHEETS MADE OF ALUMINIUM-COPPER-LITHIUM ALLOY FOR AIRCRAFT FUSELAGE MANUFACTURE
The subject of the invention is a process for manufacturing a wrought product made of aluminium alloy comprising the following steps : a) casting a plate made of alloy comprising, in percentages by weight, Cu: 2.1 to 2.8; Li: 1.1 to 1.7; Mg: 0.2 to 0.9; Mn: 0.2 to 0.6; Ti: 0.01–0.2; Ag < 0.1; Zr < 0.08; Fe and Si ≤ 0.1 each; unavoidable impurities ≤ 0.05% each and 0.15% in total; remainder aluminium; b) homogenizing said plate at 480-520°C for 5 to 60 hours; c) hot-rolling and optionally cold-rolling said homogenized plate to give a sheet; d) solution annealing the sheet at 470-520°C for 5 minutes to 4 hours; e) quenching the solution-annealed sheet; f) controlled tensioning of the solution-annealed and quenched sheet with a permanent set of 1 to 6%; g) tempering of the tensioned sheet by heating at a temperature of at least 160°C for a maximum time of 30 hours.
C22C 21/12 - Alloys based on aluminium with copper as the next major constituent
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
79.
TOOL FOR PERFORMING A FRICTION STIR WELDING WITH A FRUSTOCONICAL PIN; METHOD FOR WELDING TWO PARTS USING SUCH A TOOL; WELDED PRODUCT
The invention concerns a tool (1) intended for a friction stir welding station, the tool being capable of being rotated and comprising a body (10) defining a transverse surface forming a shoulder (11), a pin (12) extending, from the shoulder (11), along a longitudinal axis (Z) to an end (13), the pin (12) becoming slimmer between the shoulder (11) and the end, the distance between the end (13) and the shoulder (11) corresponding to a height of the pin, the pin (12) comprising a proximal portion (12p) adjacent to the shoulder (11) and extending from the shoulder (11) to the end (13) over at least 20% of the height of the pin, a distal portion (12d) adjacent to the end (13) and extending from the end (13) to the shoulder (11) over at least 1% of the height of the pin, the distal portion (12d) being inscribed in a cone frustum (14), the cone frustum (14) defining a surface, called the extension surface (15), extending the cone frustum (14) to the shoulder (11), the extension surface delimiting a frustoconical volume (16) in the proximal portion (12p), the pin extends to the outside of the frustoconical volume (16) delimited by the extension surface (15), and the pin (12) describes an outer surface inscribed in an envelope describing, in a plane parallel to the longitudinal axis (Z) and passing through the latter, in the proximal portion (12p), a profile following a curve (C), such that the curve (C) is tangential to the extension surface (15).
B23K 20/12 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by frictionFriction welding
B23K 20/233 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
The subject of the invention is a process for manufacturing a wrought product made of aluminium alloy comprising the following steps : a) casting a plate made of alloy comprising, in percentages by weight, Cu: 2.1 to 2.8; Li: 1.1 to 1.7; Mg: 0.2 to 0.9; Mn: 0.2 to 0.6; Ti: 0.010.2; Ag < 0.1; Zr < 0.08; Fe and Si = 0.1 each; unavoidable impurities = 0.05% each and 0.15% in total; remainder aluminium; b) homogenizing said plate at 480-520°C for 5 to 60 hours; c) hot-rolling and optionally cold-rolling said homogenized plate to give a sheet; d) solution annealing the sheet at 470-520°C for 5 minutes to 4 hours; e) quenching the solution-annealed sheet; f) controlled tensioning of the solution-annealed and quenched sheet with a permanent set of 1 to 6%; g) tempering of the tensioned sheet by heating at a temperature of at least 160°C for a maximum time of 30 hours.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
81.
ALUMINIUM ALLOY FLAT PRODUCT HAVING IMPROVED THICKNESS PROPERTIES
The invention relates to a flat product made of aluminium alloy with a thickness of greater than 12.5 mm that has improved thickness properties. This product is obtained by adjusting the mixing conditions during the casting of the ingot used for obtaining the flat product. The casting process is characterized by casting with mixing induced by a non-stationary field of external forces or casting with mixing induced by a pressing stationary field of external forces. The transformation process comprises a solution heat treatment at a temperature above 450°C, a quenching and a tempering or ageing in order to obtain a flat product made of aluminium alloy. Optionally, a scalping operation may be carried out during the transformation process in order to eliminate unacceptable surface defects if a rolling operation is carried out subsequently. The invention makes it possible in particular to increase the thickness of the cast product without degrading, or even while improving, the elongation in the short transverse direction of the final product.
B22D 11/049 - Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for direct chill casting, e.g. electromagnetic casting
B22D 11/115 - Treating the molten metal by using agitating or vibrating means by using magnetic fields
B22D 11/12 - Accessories for subsequent treating or working cast stock in situ
ff), so as to apply a Lorentz force (F) at various points of the sump, the average Lorentz force, during a period (P), being inclined relative to the vertical axis (Z) at an angle of inclination (β), the sump comprising a median zone, extending symmetrically on either side of the mid-plane, the thickness (T) of which corresponds to a half-thickness of the ingot; the process being characterized in that the casting speed (V) and the frequency (f) are such that throughout the median zone, level with the front, the angle of inclination of the force is strictly less than the angle of inclination of the front.
A system for controlling the progress of the manufacture of at least one product by vertical semi-continuous direct chill casting, in particular from aluminium alloy, in a fixed mold, the control system includes a dummy bottom configured to form a movable lower bottom of the fixed mold and to carry the product during casting; a weighing cell, on which the dummy bottom is arranged to rest, the weighing cell being configured to take measurements representative of the mass of the product carried by the dummy bottom during casting; and a support of the dummy bottom, to which the weighing cell is linked, configured to lower the false bottom relative to the fixed mold, substantially in a vertical direction, during casting; and a processing unit connected to each weighing cell, and configured to process the measurements, and calculate the variation in the mass of the product over time.
The invention relates to a rolled product made of aluminum alloy with a thickness of at least 50 mm comprising (in weight%): Zn 6.9 - 7.5; Mg 1.8 - 2.2; Cu 1.8 - 2.2, where the sum Cu + Mg is between 3.8 and 4.2; Zr 0.04 -0.14; Mn 0 - 0.1; Ti 0 - 0.15; V 0 - 0.1; Fe = 0.15; Si = 0.15; impurities = 0.05 each and = 0.15 total, balance aluminum. The invention also relates to the method of manufacturing such a product. The products according to the invention are particularly advantageous because they have a very favorable compromise between static mechanical strength, toughness and environmental-assisted cracking performance under conditions of high stress and humid environment.
C22C 21/10 - Alloys based on aluminium with zinc as the next major constituent
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
85.
AL- ZN-CU-MG ALLOYS WITH HIGH STRENGTH AND METHOD OF FABRICATION
The invention relates to a rolled product made of aluminum alloy with a thickness of at least 50 mm comprising (in weight%): Zn 6.9 - 7.5; Mg 1.8 - 2.2; Cu 1.8 - 2.2, where the sum Cu + Mg is between 3.8 and 4.2; Zr 0.04 -0.14; Mn 0 - 0.1; Ti 0 - 0.15; V 0 - 0.1; Fe ≤ 0.15; Si ≤ 0.15; impurities ≤ 0.05 each and ≤ 0.15 total, balance aluminum. The invention also relates to the method of manufacturing such a product. The products according to the invention are particularly advantageous because they have a very favorable compromise between static mechanical strength, toughness and environmental-assisted cracking performance under conditions of high stress and humid environment.
C22C 21/10 - Alloys based on aluminium with zinc as the next major constituent
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
The invention concerns a process to manufacture a flat-rolled product, notably for the aeronautic industry containing aluminum alloy, in which, notably a flattening and/or stretching is performed with a cumulated deformation of at least 0.5% and less than 3%, and a short heat-treatment is performed in which the sheet reaches a temperature between 130° C. and 170° C. for a period of 0.1 to 13 hours. The invention notably makes it possible to simplify the forming process of fuselage skins and to improve the balance between static mechanical strength properties and damage tolerance properties.
C22C 21/12 - Alloys based on aluminium with copper as the next major constituent
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
87.
Enclosure having a sealing device for a casting installation
An enclosure having a sealing device, for a casting installation, having a first body and a second body that is removably joined to the first body along a bearing axis, the first and second bodies together delimiting an internal chamber. The sealing device comprises: at least one compression member, at least one seal having a lateral contact face extending substantially parallel to the bearing axis; the compression member and the seal being arranged with respect to one another such that the compression member is in contact with the lateral contact face of the seal and exerts a compression force thereon that is oriented orthogonally to the bearing axis.
B22D 11/049 - Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for direct chill casting, e.g. electromagnetic casting
B22D 11/14 - Plants for continuous casting, e.g. for upwardly drawing the strand
B22D 11/00 - Continuous casting of metals, i.e. casting in indefinite lengths
A tooling for producing a metal product by feed casting, including a mold having a preheater, an ingot mold (10), a movable bottom that moves in a main direction X and a transition ring interposed between the preheater and the ingot mold (10). The tooling has a clamping ring (12) transmitting a clamping force (F1) to the transition ring (11) oriented towards the ingot mold (10), a holding mechanism that positively locks the clamping ring (12), and an axial relief mechanism configured to vary between an inactive state in which the holding mechanism exerts a holding force (F2) on the clamping ring (12) such that the clamping ring (12) exerts the clamping force (F1) on the transition ring (11) and an active state in which the axial relief mechanism resists the action applied by the holding mechanism on the clamping ring in the inactive state.
The invention concerns an extruded, rolled and/or forged aluminum-based alloy product having a thickness of at least 25 mm comprising (in weight %) :; Zn 6.70 7.40; Mg.50 1.80; Cu 2.20 2.60, with a Cu to Mg ratio of at least 1.30; Zr 0.04 0.14; Mn 0 0.5; Ti 0 0.15; V 0 0.15; Cr 0 0.25; Fe 0 0.15; Si 0 0.15; impurities = 0.0 each and = 0.15 total. The invention also concerns a method of making such a product. Products according to the invention are particularly advantageous because they exhibit simultaneously a low sensitivity to environmentally assisted cracking under conditions of high stress and humid environment, high strength and high toughness properties.
C22C 21/10 - Alloys based on aluminium with zinc as the next major constituent
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
90.
AL- ZN-CU-MG ALLOYS AND THEIR MANUFACTURING PROCESS
The invention concerns an extruded, rolled and/or forged aluminum-based alloy product having a thickness of at least 25 mm comprising (in weight %) :; Zn 6.70 –7.40; Mg.50 –1.80; Cu 2.20 –2.60, with a Cu to Mg ratio of at least 1.30; Zr 0.04 –0.14; Mn 0 –0.5; Ti 0 –0.15; V 0 –0.15; Cr 0 –0.25; Fe 0 –0.15; Si 0 –0.15; impurities ≤ 0.0 each and ≤ 0.15 total. The invention also concerns a method of making such a product. Products according to the invention are particularly advantageous because they exhibit simultaneously a low sensitivity to environmentally assisted cracking under conditions of high stress and humid environment, high strength and high toughness properties.
C22C 21/10 - Alloys based on aluminium with zinc as the next major constituent
C22F 1/053 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
91.
THIN SHEETS MADE OF ALUMINIUM-COPPER-LITHIUM ALLOY FOR AIRCRAFT FUSELAGE MANUFACTURE
The invention concerns a method for manufacturing a brushed rolled product made from Al-Cu-Li alloy with a thickness of less than 12 mm, comprising the steps of producing a rolled product, solution heat treatment and quenching, stress relieving, optionally tempering, and brushing, characterised in that the brushing tool applies a force to the rolled product generating residual compressive stresses at the surface of the brushed product; eliminates a thickness of at least 9 µm from the surface of the non-brushed rolled product; wherein the brushing step comprises at least one circular brushing motion. The rolled product obtained by the method according to the invention is advantageous. The use of such a product in an aircraft fuselage panel is advantageous.
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
B24B 39/00 - Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zoneAccessories therefor
B23P 9/00 - Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearingsFeatures of such surfaces not otherwise provided for, their treatment being unspecified
92.
THIN SHEETS MADE OF ALUMINIUM-COPPER-LITHIUM ALLOY FOR AIRCRAFT FUSELAGE MANUFACTURE
The invention concerns a method for manufacturing a brushed rolled product made from Al-Cu-Li alloy with a thickness of less than 12 mm, comprising the steps of producing a rolled product, solution heat treatment and quenching, stress relieving, optionally tempering, and brushing, characterised in that the brushing tool applies a force to the rolled product generating residual compressive stresses at the surface of the brushed product; eliminates a thickness of at least 9 µm from the surface of the non-brushed rolled product; wherein the brushing step comprises at least one circular brushing motion. The rolled product obtained by the method according to the invention is advantageous. The use of such a product in an aircraft fuselage panel is advantageous.
B23P 9/00 - Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearingsFeatures of such surfaces not otherwise provided for, their treatment being unspecified
B24B 39/00 - Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zoneAccessories therefor
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
93.
ALUMINUM COPPER LITHIUM ALLOY WITH IMPROVED MECHANICAL STRENGTH AND TOUGHNESS
The invention is a rolled and/or forged product, made of an aluminium-based alloy comprising, in % by weight, Cu: 3.2-4.0; Li: 0.80-0.95; Zn: 0.45-0.70; Mg: 0.15-0.7; Zr: 0.07-0.15; Mn: 0.1-0.6; Ag:<0.15; Fe+Si≤0.20; at least one element from Ti: 0.01-0.15; Se: 0.02-0.1; Cr: 0.02-0.1; Hf: 0.02-0.5; V: 0.02-0.1; other elements ≤0.05 each and ≤0.15 in total, remainder aluminium. In the process for manufacturing the products according to the invention a bath of liquid metal based on aluminium as alloy according to the invention is melted, an unwrought product is cast from said bath of liquid metal; said unwrought product is homogenized at a temperature between 450° C. and 550° C.; said unwrought product is hot worked and optionally cold worked preferably to a thickness of at least 15 mm: said product is solution treated between 490° C. and 530° C. for 15 min to 8 h and quenched; said product is drawn in a controlled manner with a permanent deformation of 1% to 7% and a tempering of said product is carried out. The product is advantageous for the manufacture of an aircraft structural component.
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
94.
ALUMINIUM ALLOY COMPRISING LITHIUM WITH IMPROVED FATIGUE PROPERTIES
An aluminium alloy comprising lithium with improved mechanical strength and toughness. The invention relates to a 2XXX wrought alloy product comprising from 0.05 to 1.9% by weight of Li and from 0.005 to 0.045% by weight of Cr and/or of V. The invention also relates to an as-cast 2XXX alloy product comprising from 0.05 to 1.9% by weight of Li and from 0.005 to 0.045% by weight of Cr and/or of V. Finally, the invention relates to an aircraft structure element, preferably a lower surface or upper surface element, the skin and stiffeners of which originate from the same starting material, a spar or a rib, comprising a wrought product.
An aluminium alloy comprising lithium with improved mechanical strength and toughness. The invention relates to a 2XXX wrought alloy product comprising from 0.05 to 1.9% by weight of Li and from 0.005 to 0.045% by weight of Cr and/or of V. The invention also relates to an as-cast 2XXX alloy product comprising from 0.05 to 1.9% by weight of Li and from 0.005 to 0.045% by weight of Cr and/or of V. Finally, the invention relates to an aircraft structure element, preferably a lower surface or upper surface element, the skin and stiffeners of which originate from the same starting material, a spar or a rib, comprising a wrought product.
The invention relates to a product made of an aluminium-based alloy comprising, by wt. %, Cu: 2.4-3.2; Li: 1.6-2.3; Mg: 0.3-0.9; Mn: 0.2-0.6; Zr: 0.12-0.18; such that Zr = - 0.06*Li + 0.242; Zn: < 1.0; Ag: < 0.15; Fe + Si = 0.20; optionally, at least one element selected from Ti, Sc, Cr, Hf and V, the content of the element, if selected, being: Ti: 0.01-0.1; Sc: 0.01-0.15; Cr: 0.01-0.3; Hf: 0.01-0.5; V: 0.01-0.3; other elements = 0.05 each and = 0.15 in total; the remainder being aluminium. The invention also relates to a method for manufacturing an as-cast aluminum alloy product according to the invention, comprising the following steps: preparing a liquid metal bath; casting an as-cast shape from said liquid metal bath; and solidifying the as-cast shape into a billet, a rolling plate or a forging blank; characterised in that the casting is performed without adding any grain refiner, or by adding a refiner comprising (i) Ti and (ii) B or C, such that the content of B from the refiner is less than 45 ppm, and that of C is less than 6 ppm, and/or characterised in that the casting is carried out, for an as-cast shape of thickness E or with a diameter D greater than 150 mm, at a casting rate v (mm/min) greater than 30 for a plate-type as-cast shape or 9000/D for a billet-type as-cast shape.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
The invention relates to a product made of an aluminium-based alloy comprising, by wt. %, Cu: 2.5-3.4; Li: 1.6-2.2; Mg: 0.4-0.9; Mn: 0.2-0.6, Zr: 0.08-0.18; Zn: ឬ 0.4; Ag: ឬ 0.15; Fe + Si ≤ 0.20; at least one element selected from Ti, Se, Cr, Hf and V, the content of the element, if selected, being: Ti: 0.01-0.15; Se: 0.01-0.15; Cr: 0.01-0.3; Hf: 0.01-0.5; V: 0.01-0.3; other elements ≤ 0.05 each and ≤ 0.15 in total; the remainder being aluminium. The invention also relates to a method for manufacturing an aluminum alloy-based, extruded, rolled and/or forged product, and a structural element incorporating at least one product as described above.
C22C 21/12 - Alloys based on aluminium with copper as the next major constituent
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
The invention relates to a product made of an aluminium-based alloy comprising, by wt. %, Cu: 2.4-3.2; Li: 1.6-2.3; Mg: 0.3-0.9; Mn: 0.2-0.6; Zr: 0.12-0.18; such that Zr ≥ - 0.06*Li + 0.242; Zn: ឬ 1.0; Ag: ឬ 0.15; Fe + Si ≤ 0.20; optionally, at least one element selected from Ti, Sc, Cr, Hf and V, the content of the element, if selected, being: Ti: 0.01-0.1; Sc: 0.01-0.15; Cr: 0.01-0.3; Hf: 0.01-0.5; V: 0.01-0.3; other elements ≤ 0.05 each and ≤ 0.15 in total; the remainder being aluminium. The invention also relates to a method for manufacturing an as-cast aluminum alloy product according to the invention, comprising the following steps: preparing a liquid metal bath; casting an as-cast shape from said liquid metal bath; and solidifying the as-cast shape into a billet, a rolling plate or a forging blank; characterised in that the casting is performed without adding any grain refiner, or by adding a refiner comprising (i) Ti and (ii) B or C, such that the content of B from the refiner is less than 45 ppm, and that of C is less than 6 ppm, and/or characterised in that the casting is carried out, for an as-cast shape of thickness E or with a diameter D greater than 150 mm, at a casting rate v (mm/min) greater than 30 for a plate-type as-cast shape or 9000/D for a billet-type as-cast shape.
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
The invention relates to a product made of an aluminium-based alloy comprising, by wt. %, Cu: 2.5-3.4; Li: 1.6-2.2; Mg: 0.4-0.9; Mn: 0.2-0.6, Zr: 0.08-0.18; Zn: < 0.4; Ag: < 0.15; Fe + Si = 0.20; at least one element selected from Ti, Se, Cr, Hf and V, the content of the element, if selected, being: Ti: 0.01-0.15; Se: 0.01-0.15; Cr: 0.01-0.3; Hf: 0.01-0.5; V: 0.01-0.3; other elements = 0.05 each and = 0.15 in total; the remainder being aluminium. The invention also relates to a method for manufacturing an aluminum alloy-based, extruded, rolled and/or forged product, and a structural element incorporating at least one product as described above.
C22C 21/12 - Alloys based on aluminium with copper as the next major constituent
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22C 21/18 - Alloys based on aluminium with copper as the next major constituent with zinc
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
100.
ALUMINIUM ALLOY VACUUM CHAMBER ELEMENTS WHICH ARE STABLE AT HIGH TEMPERATURE
The invention relates to a vacuum chamber element obtained by machining and surface treatment of sheet metal with a thickness of at least 10 mm made of aluminium alloy with the following composition, as wt%: Si: 0.4 – 0.7; Mg: 0.4 – 1.0; the ratio of Mg/Si in wt% being less than 1.8; Ti: 0.01 – 0.15, Fe 0.08 – 0.25; Cu ឬ 0.35; Mn ឬ 0.4; Cr: ឬ 0.25; Zn ឬ 0.04; other elements ឬ 0.05 each and ឬ 0.15 in total, the remainder being aluminium, characterised in that the grain size of said sheet metal is such that the mean linear intercept length l measured on the L/TC plane according to the ASTM E112 standard, is at least 350 µm between surface and ½ thickness. The invention likewise relates to the method for manufacturing such a vacuum chamber element. The products according to the invention are particularly advantageous in their resistance to creeping at high temperature, while having high properties of corrosion resistance, uniformity of properties in the thickness, and machinability.
C22C 21/08 - Alloys based on aluminium with magnesium as the next major constituent with silicon
C22F 1/05 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
C25D 11/04 - Anodisation of aluminium or alloys based thereon
