2XXX aluminum alloys
New 2xxx aluminum alloys are disclosed. The new 2xxx aluminum alloys generally include from 0.08 to 0.20 wt. % Ti. The new 2xxx aluminum alloys may realize an improved combination of two or more of strength, fracture toughness, elongation, and corrosion resistance, for instance.
1 . A 2xxx aluminum alloy comprising:
from 0.10 to 0.13 wt. % Ti;
from 4.8 to 5.0 wt. % Cu;
from 0.49 to 1.0 wt. % Zn;
from 0.30 to 0.40 wt. % Mn;
from 0.30 to 0.50 wt. % Mg;
from 0.30 to 0.40 wt. % Ag;
from 0.07 to 0.12 wt. % Zr;
up to 0.15 wt. % Fe;
up to 0.10 wt. % Si;
up to 0.05 wt. % Cr;
up to 0.05 wt. % V; and
up to 0.05 wt. % Li;
the balance being aluminum, incidental elements and impurities,
wherein the 2xxx aluminum alloy includes not greater than 0.15 wt. %, in total, of the impurities,
wherein the 2xxx aluminum alloy includes not greater than 0.05 wt. % of each of the impurities, and
wherein the wrought product realizes a tensile yield strength (LT) of at least 390 MPa.
2 . The 2xxx aluminum alloy of claim 1 , wherein the 2xxx aluminum alloy is in the form of a wrought product, and wherein the wrought product has a cross-sectional thickness of from 12.7 mm to 305 mm.
3 . The 2xxx aluminum alloy of claim 2 , wherein the wrought product is in a T8 temper.
4 . The 2xxx aluminum alloy of claim 1 , wherein the wrought product realizes a plane-strain (K IC ) fracture toughness (T-L) of at least 30 Mpa-sqrt-m.
5 . The 2xxx aluminum alloy of claim 4 , wherein the wrought product realizes an elongation (LT) of at least 6.0%.
6 . The 2xxx aluminum alloy of claim 5 , wherein the wrought product is (a) LT stress corrosion cracking resistant, (b) ST stress corrosion cracking resistant, or (c) both LT stress corrosion cracking resistant and ST stress corrosion cracking resistant.
7 . The 2xxx aluminum alloy of claim 1 , wherein the 2xxx aluminum alloy includes not greater than 0.90 wt. % Zn.
8 . The 2xxx aluminum alloy of claim 1 , wherein the 2xxx aluminum alloy includes not greater than 0.80 wt. % Zn.
9 . The 2xxx aluminum alloy of claim 1 , wherein the 2xxx aluminum alloy includes not greater than 0.70 wt. % Zn.
10 . The 2xxx aluminum alloy of claim 1 , wherein the 2xxx aluminum alloy includes not greater than 0.60 wt. % Zn.
11 . The 2xxx aluminum alloy of claim 1 , wherein the 2xxx aluminum alloy includes not greater than 0.10 wt. % Fe.
12 . The 2xxx aluminum alloy of claim 1 , wherein the 2xxx aluminum alloy includes not greater than 0.07 wt. % Si.
13 . The 2xxx aluminum alloy of claim 1 , wherein the 2xxx aluminum alloy includes not greater than 0.03 wt. % Cr.
14 . The 2xxx aluminum alloy of claim 1 , wherein the 2xxx aluminum alloy includes not greater than 0.03 wt. % V.
15 . The 2xxx aluminum alloy of claim 1 , wherein the 2xxx aluminum alloy is in the form of an additively manufactured product, an additive manufacturing feedstock, a shape cast product, or an ingot.
16 . A wrought product made from the 2xxx aluminum alloy of claim 1 .
17 . The wrought product of claim 16 , wherein the wrought product is one of a plate product, an extruded product, or a forged product.
18 . The wrought product of claim 16 , wherein the wrought product is in a T3 or a T8 temper.
19 . The wrought product of claim 16 , wherein the wrought product has a thickness of at least 108 mm.