公开(公告)号：US20210340656A1

公开(公告)日：2021-11-04

申请号：US17308794

申请日：2021-05-05

Applicant: ARCONIC TECHNOLOGIES LLC

Inventor： Julien Boselli ,  Jen C. Lin ,  Lynette M. Karabin ,  Severine Cambier ,  Francine S. Bovard ,  Wenping Zhang

IPC: C22F1/053 ,  C22C21/10

Abstract: New 7xxx aluminum alloys are disclosed. The new 7xxx aluminum alloys generally include from 0.05 to 1.0 wt. % Ag. In one approach, a new 7xxx aluminum alloy includes from 0.05 to 1.0 wt. % Ag, from 5.5 to 9.0 wt. % Zn, from 1.2 to 2.6 wt. % Cu, from 1.3 to 2.5 wt. % Mg, up to 0.60 wt. % Mn, up to 1.0 wt. % of at least one grain structure control material, wherein the at least one grain structure control material is selected from the group consisting of Zr, Cr, V, Hf, other rare earth elements, and combinations thereof, up to 0.30 wt. % Fe, up to 0.30 wt. % Si, up to 0.15 wt. % Ti, not greater than 0.08 wt. % Sc, and not greater than 0.05 wt. % Li, the balance being aluminum, optional incidental elements and impurities.