公开(公告)号：EP3368702A1

公开(公告)日：2018-09-05

申请号：EP16860785.1

申请日：2016-10-27

申请人： Arconic Inc.

发明人： YAN, Xinyan ,  BRYANT, James Daniel ,  LIN, Jen C. ,  ZHANG, Wenping ,  SIMIELLI, Eider

IPC分类号： C22C21/10

CPC分类号： C22C21/10

摘要： New wrought 7xxx aluminum alloys are disclosed. The new wrought 7xxx aluminum alloys generally include from 3.75 to 8.0 wt. % Zn, from 1.25 to 3.0 wt. % Mg, where the wt. % Zn exceeds the wt. % Mg, from 0.35 to 1.35 wt. % Cu, from 0.04 to 0.20 wt. % V, from 0.06 to 0.20 wt. % Zr, where V+Zr≦0.23 wt. %, from 0.01 to 0.25 wt. % Ti, up to 0.50 wt. % Mn, up to 0.40 wt. % Cr, up to 0.35 wt. % Fe, and up to 0.25 wt. % Si, the balance being aluminum and impurities, wherein the wrought 7xxx aluminum alloy include not greater than 0.10 wt. % each of any one impurity, and wherein the wrought 7xxx aluminum alloy includes not greater than 0.35 wt. % in total of the impurities.