WROUGHT 7XXX ALUMINUM ALLOYS, AND METHODS FOR MAKING THE SAME
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.
1 . A wrought 7xxx aluminum alloy consisting of:
(a) from 3.75 to 8.0 wt. % Zn;
(b) from 1.25 to 3.0 wt. % Mg;
(c) from 0.35 to 1.35 wt. % Cu;
(d) from 0.04 to 0.20 wt. % V;
(e) from 0.06 to 0.20 wt. % Zr;
wherein V+Zr≦0.23 wt. %;
(f) from 0.01 to 0.25 wt. % Ti;
(g) up to 0.50 wt. % Mn;
(h) up to 0.40 wt. % Cr;
(i) up to 0.35 wt. % Fe; and
(j) up to 0.25 wt. % Si;
(k) the balance being aluminum and impurities, wherein the wrought 7xxx aluminum alloy wrought 7xxx aluminum alloy includes 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.
2 . The wrought 7xxx aluminum alloy of claim 1 , wherein the wrought 7xxx aluminum alloy is a forged wheel product.
3 . The wrought 7xxx aluminum alloy of claim 1 , wherein the wrought 7xxx aluminum alloy is a forged wheel product in the T5 temper.
4 . The wrought 7xxx aluminum alloy of claim 1 , wherein the wrought 7xxx aluminum alloy is a forged wheel product in the T5 temper, and wherein the wrought 7xxx aluminum alloy realizes a quench insensitivity of not greater than 7 ksi.