IP Library › Granted Patent US 10,538,834
Granted Patent B2
US 10,538,834 · App. 15/381,707 · Granted Jan 21, 2020

High-strength 6XXX aluminum alloys and methods of making the same

Inventors: Wei Wen (Powder Springs, GA); Hany Ahmed (Atlanta, GA); Rajeev Kamat (Marietta, GA); Corrado Bassi (Valais, CH); Guillaume Florey (Valais, CH); Cyrille Bezencon (Valais, CH); Juergen Timm (Steisslingen, DE); David Leyvraz (Sierre, CH); Aude Despois (Valais, CH); Sazol Kumar Das (Acworth, GA)
Assignee: NOVELIS INC.
C22F1/057B22D7/005C22C21/02C22C21/08C22C21/14C22C21/16C22C21/18C22F1/043C22F1/047
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Quick Facts
Patent No.
US 10,538,834
App. No.
15/381,707
Granted
Jan 21, 2020
Kind
B2
Abstract

Disclosed are high-strength aluminum alloys and methods of making and processing such alloys. More particularly, disclosed is a 6XXX series aluminum alloy exhibiting improved mechanical strength, formability, corrosion resistance, and anodized qualities. An exemplary method includes homogenizing, hot rolling, solutionizing, and quenching. In some cases, the processing steps can further include annealing and/or cold rolling.

Claims (11)

1. A rolled aluminum alloy product comprising about 0.6-0.9 wt. % Cu, about 0.8-1.3 wt. % Si, about 1.0-1.3 wt. % Mg, about 0.03-0.25 wt. % Cr, about 0.05-0.2 wt. % Mn, about 0.15-0.3 wt. % Fe, up to about 0.2 wt. % Zr, up to about 0.2 wt. % Sc, up to about 0.25 wt. % Sn, up to about 0.9 wt. % Zn, up to about 0.1 wt. % Ti, up to about 0.07 wt. % Ni, and up to about 0.15 wt. % of impurities, with the remainder as Al.

2. The rolled aluminum alloy product of claim 1 , wherein the rolled aluminum alloy product has a Si to Mg ratio of from about 0.55:1 to about 1.30:1 by weight.

3. The rolled aluminum alloy product of claim 1 , wherein the rolled aluminum alloy product has an excess Si content of from −0.5 to 0.1.

4. A rolled aluminum alloy product comprising about 0.5-2.0 wt. % Cu, about 0.5-1.5 wt. % Si, about 0.5-1.5 wt. % Mg, about 0.001-0.25 wt. % Cr, about 0.005-0.4 wt. % Mn, about 0.1-0.3 wt. % Fe, up to about 0.2 wt. % Zr, up to about 0.2 wt. % Sc, up to about 0.25 wt. % Sn, up to about 4.0 wt. % Zn, up to about 0.15 wt. % Ti, less than 0.1 wt. % Ni, and up to about 0.15 wt. % of impurities, with the remainder as Al.

5. The rolled aluminum alloy product of claim 4 , comprising about 0.5-2.0 wt. % Cu, about 0.5-1.35 wt. % Si, about 0.6-1.5 wt. % Mg, about 0.001-0.18 wt. % Cr, about 0.005-0.4 wt. % Mn, about 0.1-0.3 wt. % Fe, up to about 0.2 wt. % Zr, up to about 0.2 wt. % Sc, up to about 0.25 wt. % Sn, up to about 0.9 wt. % Zn, up to about 0.15 wt. % Ti, less than 0.1 wt. % Ni, and up to about 0.15 wt. % of impurities, with the remainder as Al.

6. The rolled aluminum alloy product of claim 4 , wherein the aluminum alloy comprises about 0.6-0.9 wt. % Cu, about 0.7-1.1 wt. % Si, about 0.9-1.5 wt. % Mg, about 0.06-0.15 wt. % Cr, about 0.05-0.3 wt. % Mn, about 0.1-0.3 wt. % Fe, up to about 0.2 wt. % Zr, up to about 0.2 wt. % Sc, up to about 0.25 wt. % Sn, up to about 0.2 wt. % Zn, up to about 0.15 wt. % Ti, up to about 0.07 wt. % Ni, and up to about 0.15 wt. % of impurities, with the remainder as Al.

7. The rolled aluminum alloy product of claim 4 , comprising about 0.5-1.8 wt. % Cu, about 0.5-1.0 wt. % Si, about 0.6-1.2 wt. % Mg, about 0.05-0.2 wt. % Cr, about 0.05-0.25 wt. % Mn, about 0.1-0.3 wt. % Fe, up to about 0.15 wt. % Zr, up to about 0.15 wt. % Sc, up to about 0.15 wt. % Sn, up to about 0.4 wt. % Zn, up to about 0.15 wt. % Ti, less than 0.05 wt. % Ni, up to about 0.15 wt. % of impurities, and Al.

8. The rolled aluminum alloy product of claim 4 , comprising about 0.6-1.7 wt. % Cu, about 0.5-0.9 wt. % Si, about 0.7-1.1 wt. % Mg, about 0.05-0.15 wt. % Cr, about 0.1-0.2 wt. % Mn, about 0.1-0.3 wt. % Fe, up to about 0.1 wt. % Zr, up to about 0.1 wt. % Sc, up to about 0.1 wt. % Sn, up to about 0.25 wt. % Zn, up to about 0.15 wt. % Ti, less than 0.05 wt. % Ni, up to about 0.15 wt. % of impurities, and Al.

9. The rolled aluminum alloy product of claim 4 , wherein the rolled aluminum alloy product has a Si to Mg ratio of from about 0.55:1 to about 1.30:1 by weight.

10. The rolled aluminum alloy product of claim 4 , wherein the rolled aluminum alloy product has an excess Si content of from −0.5 to 0.1.

11. A rolled aluminum alloy product comprising about 0.9-1.5 wt. % Cu, about 0.7-1.1 wt. % Si, about 0.7-1.2 wt. % Mg, about 0.06-0.15 wt. % Cr, about 0.05-0.3 wt. % Mn, about 0.1-0.3 wt. % Fe, up to about 0.2 wt. % Zr, up to about 0.2 wt. % Sc, up to about 0.25 wt. % Sn, up to about 0.2 wt. % Zn, up to about 0.15 wt. % Ti, up to about 0.07 wt. % Ni, and up to about 0.15 wt. % of impurities, with the remainder as Al.

Assignments (4)
SECURITY INTEREST Recorded Mar 11, 2025
From: NOVELIS DEUTSCHLAND GMBH; NOVELIS INC.; NOVELIS KOBLENZ GMBH
To: CITIBANK, N.A.
Reel/Frame 070481/0417 →
SECURITY INTEREST Recorded May 21, 2019
From: NOVELIS INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 049247/0325 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 24, 2018
From: DAS, SAZOL KUMAR
To: NOVELIS INC.
Reel/Frame 044708/0585 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 15, 2017
From: WEN, WEI; AHMED, HANY; KAMAT, RAJEEV; BASSI, CORRADO; FLOREY, GUILLAUME; BEZENCON, CYRILLE; TIMM, JUERGEN; LEYVRAZ, DAVID; DESPOIS, AUDE
To: NOVELIS INC.
Reel/Frame 042380/0454 →
Continuity (2)
Provisional Application 62269385 · Dec 18, 2015
Related Publication 20170175240A1 · Jun 22, 2017