IP Library › Granted Patent US 9,909,199
Granted Patent B2
US 9,909,199 · App. 14/849,698 · Granted Mar 6, 2018

Alloys for highly shaped aluminum products and methods of making the same

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Quick Facts
Patent No.
US 9,909,199
App. No.
14/849,698
Filed
Sep 10, 2015
Granted
Mar 6, 2018
Kind
B2
Art Unit
1733
USPC
420/528
Abstract

Described herein are novel aluminum containing alloys. The alloys are highly formable and can be used for producing highly shaped aluminum products, including bottles and cans.

Claims (18)

1. An aluminum alloy comprising 0.25-0.35 wt. % Si, 0.40-0.60 wt. % Fe, 0-0.40 wt. % Cu, 1.1-1.2 wt. % Mn, 0-0.50 wt. % Mg, 0.001-0.03 wt. % Cr, 0-0.3 wt. % Zn, up to 0.15 wt. % of impurities, with the remainder as Al, wherein the alloy includes Mn-containing dispersoids and wherein the alloy exhibits an increased elongation, as compared to an AA3104 alloy, when the alloy is subjected to a strain rate of at least 0.5 s −1 at a temperature up to 250° C.

2. The aluminum alloy of claim 1 , comprising 0.25-0.35 wt. % Si, 0.40-0.50 wt. % Fe, 0.08-0.22 wt. % Cu, 1.1-1.2 wt. % Mn, 0-0.5 wt. % Mg, 0.001-0.03 wt. % Cr, 0.07-0.13 wt. % Zn, up to 0.15 wt. % of impurities, with the remainder as Al.

3. The aluminum alloy of claim 1 , comprising 0.25-0.30 wt. % Si, 0.40-0.45 wt. % Fe, 0.10-0.20 wt. % Cu, 1.1-1.2 wt. % Mn, 0-0.25 wt. % Mg, 0.003-0.02 wt. % Cr, 0.07-0.10 wt. % Zn, up to 0.15 wt. % of impurities, with the remainder as Al.

4. The aluminum alloy of claim 1 , wherein the alloy includes Mg in an amount of 0.10 wt. % or less.

5. The aluminum alloy of claim 1 , wherein the Mn-containing dispersoids each have a diameter of 1 μm or less.

6. The aluminum alloy of claim 1 , wherein the alloy is produced by direct chill casting.

7. The aluminum alloy of claim 6 , wherein the alloy is produced by homogenization, hot rolling, and cold rolling.

8. The aluminum alloy of claim 1 , wherein the alloy is produced by a two-stage homogenization cycle.

9. A bottle comprising the aluminum alloy of claim 1 .

10. A can comprising the aluminum alloy of claim 1 .

11. An aluminum alloy comprising 0.25-0.35 wt. % Si, 0.40-0.60 wt. % Fe, 0-0.40 wt. % Cu, 1.1-1.2 wt. % Mn, 0-0.20 wt. % Mg, 0.001-0.03 wt. % Cr, 0-0.3 wt. % Zn, up to 0.15 wt. % of impurities, with the remainder as Al, wherein the alloy includes Mn-containing dispersoids and wherein the alloy exhibits a total elongation of at least 20% when the alloy is subjected to a strain rate of at least 0.5 s −1 at a temperature up to 250° C.

12. The aluminum alloy of claim 11 , comprising 0.25-0.35 wt. % Si, 0.40-0.50 wt. % Fe, 0.08-0.22 wt. % Cu, 1.1-1.2 wt. % Mn, 0-0.2 wt. % Mg, 0.001-0.03 wt. % Cr, 0.07-0.13 wt. % Zn, up to 0.15 wt. % of impurities, with the remainder as Al.

13. The aluminum alloy of claim 11 , comprising 0.25-0.30 wt. % Si, 0.40-0.45 wt. % Fe, 0.10-0.20 wt. % Cu, 1.1-1.2 wt. % Mn, 0-0.15 wt. % Mg, 0.003-0.02 wt. % Cr, 0.07-0.10 wt. % Zn, up to 0.15 wt. % of impurities, with the remainder as Al.

14. The aluminum alloy of claim 11 , wherein the alloy includes Mg in an amount of 0.10 wt. % or less.

15. The aluminum alloy of claim 14 , wherein the total elongation is at least 25%.

16. The aluminum alloy of claim 14 , wherein the total elongation is at least 30%.

17. A bottle comprising the aluminum alloy of claim 11 .

18. A can comprising the aluminum alloy of claim 11 .