High-forming multi-layer aluminum alloy package

Patent metadata

Field	Value
Publication number	US-10689041-B2
Application number	US-201615288088-A
Country	US
Kind code	B2
Filing date	Oct 7, 2016
Priority date	Oct 15, 2015
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

Provided herein are novel, high-forming multi-layer aluminum alloy packages that include a core layer and one or more cladding layers. The alloy packages have excellent bake-hardening properties and are highly recyclable. The packages also display exceptional bendability and elongation properties. Also provided herein are novel aluminum alloy compositions for use as cladding layers. The compositions contain up to 0.6 wt. % Fe and one or more of Mn, Ni, Ti, Co, Nb, Cr, V, Zr, Hf and Ta.

First claim

What is claimed is:

1. An aluminum alloy rolled product comprising 0.2 to 0.6 wt. % Fe, 0.06 to 0.25 wt. % Mn, up to 0.15 wt. % Si, less than 0.05 wt. % Cu, up to 0.35 wt. % Mg, up to 0.4 wt. % Zn, 0.05 to 0.2 wt. % V, up to 0.15 wt. % impurities, and Al,
wherein the aluminum alloy exhibits an elongation at break of at least 20% in directions longitudinal, transverse, and diagonal to a rolling direction of the aluminum alloy.

2. The aluminum alloy rolled product of claim 1 , comprising 0.25 to 0.55 wt. % Fe, 0.08 to 0.20 wt. % Mn, up to 0.15 wt. % Si, 0.005 to 0.045 wt. % Cu, up to 0.25 wt. % Mg, up to 0.20 wt. % Zn, 0.05 to 0.19 wt. % V, up to 0.15 wt. % impurities, and Al.

3. The aluminum alloy rolled product of claim 1 , comprising 0.25 to 0.55 wt. % Fe, 0.08 to 0.20 wt. % Mn, up to 0.12 wt. % Si, 0.005 to 0.03 wt. % Cu, 0.3 to 0.35 wt. % Mg, up to 0.05 wt. % Zn, 0.05 to 0.15 wt. % V, up to 0.15 wt. % impurities, and Al.

4. The aluminum alloy rolled product of claim 1 , further comprising Ti in an amount of from 0.01 to 0.15 wt. %.

5. The aluminum alloy rolled product of claim 1 , further comprising Ni in an amount of from 0.01 to 0.60 wt. %.

6. The aluminum alloy rolled product of claim 1 , further comprising Co in an amount of from 0.01 to 0.60 wt. %.

7. The aluminum alloy rolled product of claim 1 , further comprising Nb in an amount of from 0.01 to 0.3 wt. %.

8. The aluminum alloy rolled product of claim 1 , further comprising Cr in an amount of from 0.01 to 0.2 wt. %.

9. The aluminum alloy rolled product of claim 1 , further comprising Zr in an amount of from 0.01 to 0.25 wt. %.

10. The aluminum alloy rolled product of claim 1 , further comprising Hf in an amount of from 0.01 to 0.30 wt. %.

11. The aluminum alloy rolled product of claim 1 , further comprising Ta in an amount of from 0.01 to 0.20 wt. %.

12. The aluminum alloy rolled product of claim 1 , comprising 0.2 to 0.5 wt. % Fe, 0.1 to 0.2 wt. % Mn, up to 0.15 wt. % Si, less than 0.05 wt. % Cu, up to 0.1 wt. % Mg, up to 0.20 wt. % Zn, 0.05 to 0.2 wt. % V, and further comprising up to 0.15 wt. % Cr, up to 0.6 wt. % Ni, up to 0.12 wt. % Ti, up to 0.6 wt. % Co, up to 0.2 wt. % Nb, up to 0.25 wt. % Zr, up to 0.30 wt. % Hf, up to 0.15 wt. % Ta, up to 0.15 wt. % impurities, and Al.

13. The aluminum alloy rolled product of claim 12 , wherein a combined content of Fe, Mn, Cr, Ti, Co, Ni, and V present in the alloy ranges from 0.60 wt. % to 0.90 wt. %.

14. The aluminum alloy rolled product of claim 1 , wherein the aluminum alloy forms a sheet having a grain size of from 10 microns to 30 microns.

15. The aluminum alloy rolled product of claim 1 , wherein the aluminum alloy forms a sheet having a grain size of from 15 microns to 25 microns.

16. The aluminum alloy rolled product of claim 1 , wherein the Cu content is from 0.005 wt. % to 0.04 wt. %.

Assignees

• Novelis Inc

Inventors

• Florey Guillaume
• Bezencon Cyrille
• Bassi Corrado
• Timm Juergen
• Despois Jean-Francois
• Stadlin Jacques

Classifications

• B22D7/005 Primary

  from non-ferrous metals · CPC title

• C22F1/04

  of aluminium or alloys based thereon · CPC title

• C22C21/00 Primary

  Alloys based on aluminium · CPC title

• C22F1/043

  of alloys with silicon as the next major constituent · CPC title

• B62D29/008 Primary

  predominantly of light alloys, e.g. extruded · CPC title