Aluminum alloys, and methods for producing the same

US11608551B2 · kind B2 · utility

Assignee

• Howmet Aerospace Inc. · US

Inventors

• Jen C. Lin · Export, US
• Gabriele F. Ciccola · Hudson, US
• Santosh Prasad · Murrysville, US
• Wei-Chih Wen · Hsinchu, TW
• Raymond J. Kilmer · Lancaster, US

Key dates

• Filing date: Apr 14, 2020
• Grant date: Mar 21, 2023
• Expiry date: Mar 3, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22F1/053
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

New aluminum alloys are disclosed and generally include 0.6-1.4 wt. % Si, 0.25-0.90 wt. % Mg, wherein the ratio of wt. % Si to wt. % Mg is from 1.05:1 to 5.0:1, 0.25-2.0 wt. % Cu, 0.10-3.5 wt. % Zn, 0.01-1.0 wt. % Fe, up to 0.8 wt. % Mn, up to 0.25 wt. % Cr, up to 0.20 wt. % Zr, up to 0.20 wt. % V, and up to 0.15 wt. % Ti, wherein the total of Fe+Mn+Cr+Zr+V+Ti is not greater than 2.0 wt. %, the balance being aluminum and impurities. The new aluminum alloys may include Q phase precipitates. In some embodiments, the solvus temperature of the Q phase precipitates is not greater than 950° F.