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US 12,692,577 B2Granted
6XXX aluminum alloys and methods for producing the same
AssigneeArconic Technologies LLC
InventorsTimothy A. Hosch, Russell S. Long, Edward M. Williams, Lynette M. Karabin
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Abstract
New 6xxx aluminum alloys are disclosed. In one approach, a new 6xxx aluminum alloy may include from 0.25-0.60 wt. % Fe, 0.8-1.2 wt. % Si, 0.35-1.1 wt. % Mg, 0.05-0.8 wt. % Mn, up to 0.30 wt. % Cu, up to 0.35 wt. % Zn, up to 0.15 wt. % Ti, up to 0.15 wt. % each of Cr, Zr, and V, the balance being aluminum, incidental elements and impurities. The new 6xxx aluminum alloys may be made from recycled aluminum alloys.
Claims17
A 6xxx aluminum alloy sheet product comprising:
- 0.25-0.60 wt. % Fe;
- 0.05-0.8 wt. % Mn;
- wherein the (wt. % Fe) plus the (wt. % Mn) is at least ≥0.40 wt. %;
- 0.8-1.2 wt. % Si;
- 0.55-1.1 wt. % Mg;
- wherein the 6xxx aluminum alloy sheet product includes a weight ratio of silicon-to-magnesium in the range of from 0.8:1 to 2.4:1 (Si:
- Mg);
- up to 0.10-0.30 wt. % Cu;
- up to 0.50 wt. % Zn;
- up to 0.15 wt. % Ti;
- up to 0.15 wt. % each of Cr, Zr, and V;
- the balance being aluminum, optional incidental elements and impurities;
- wherein the 6xxx aluminum alloy sheet product is in a T4 or T43 temper and has a thickness of from 0.5 to 4.0 mm;
- wherein the 6xxx aluminum alloy sheet product realizes a TYS (LT) of not greater than 140 MPa at 30 days of natural aging;
- wherein the 6xxx aluminum alloy sheet product realizes a (UTS (LT))-(TYS (LT)) of at least 120 MPa at 7 days of natural aging;
- and
- wherein the 6xxx aluminum alloy sheet product is in the form of an automotive component.
14 more elements
Dependencies are inferred from the claim text.