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.