公开(公告)号：US20230012938A1

公开(公告)日：2023-01-19

申请号：US17943827

申请日：2022-09-13

Applicant: CONSTELLIUM ISSOIRE

Inventor： Ricky WHELCHEL ,  Erembert NIZERY ,  Diana KOSCHEL ,  Jean-Christophe EHRSTROM ,  Timothy WARNER

IPC: C22C21/10 ,  B64C3/18 ,  C22F1/053

Abstract: 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.

公开(公告)号：US20200232072A1

公开(公告)日：2020-07-23

申请号：US16650285

申请日：2018-09-24

Applicant: CONSTELLIUM ISSOIRE

Inventor： Ricky WHELCHEL ,  Erembert NIZERY ,  Diana KOSCHEL ,  Jean-Christophe EHRSTROM ,  Timothy WARNER

IPC: C22C21/10 ,  C22F1/053 ,  B64C3/18

Abstract: 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.

公开(公告)号：US20210238706A1

公开(公告)日：2021-08-05

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

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.