公开(公告)号：US12065720B2

公开(公告)日：2024-08-20

申请号：US17284373

申请日：2019-10-07

Applicant: CONSTELLIUM ISSOIRE

Inventor： Juliette Chevy ,  Jean-Christophe Ehrstrom ,  Pablo Lorenzino

IPC: C22C21/16 ,  B64C1/00 ,  C22C1/02 ,  C22C21/18 ,  C22F1/05 ,  C22F1/057

CPC classification number: C22C21/16 ,  B64C1/00 ,  C22C1/02 ,  C22C21/18 ,  C22F1/057 ,  B64C2001/0081

Abstract: 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.

公开(公告)号：US11976347B2

公开(公告)日：2024-05-07

申请号：US16627970

申请日：2018-06-28

Applicant: CONSTELLIUM ISSOIRE

Inventor： Ricky Whelchel ,  Erembert Nizery ,  Diana Koschel ,  Jean-Christophe Ehrstrom ,  Alireza Arbab

IPC: C22F1/053 ,  C22C21/10

CPC classification number: C22F1/053 ,  C22C21/10

Abstract: 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.

公开(公告)号：US12247264B2

公开(公告)日：2025-03-11

申请号：US16973111

申请日：2019-06-27

Applicant: CONSTELLIUM ISSOIRE

Inventor： Jean-Christophe Ehrstrom ,  Julien Laye ,  Sylvie Arsene ,  Timothy Warner

IPC: C21D9/50 ,  B23K20/233 ,  G16C60/00 ,  B23K101/00 ,  B23K103/10

Abstract: 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.