Heat treatable aluminum alloys having magnesium and zinc and methods for producing the same

US9587298B2 · kind B2 · utility

Assignee

• Arconic Corporation · US

Inventors

• Jen C. Lin · Export, US
• John M. Newman · Export, US
• Ralph R. Sawtell · Monroeville, US
• Rajeev G. Kamat · Marietta, US
• Darl G. Boysel · Delmont, US
• Gary H. Bray · Murrysville, US
• James Daniel Bryant · Murrysville, US
• Brett P. Connor · Washington, US
• Mario Greco · Gibsonia, US
• Gino Norman Iasella · Gibsonia, US
• David J. McNeish · Greensburg, US
• Shawn J. Murtha · Monroeville, US
• Roberto J. Rioja · Lower Burrell, US
• Shawn P. Sullivan · Oakmont, US

Key dates

• Filing date: Mar 9, 2013
• Grant date: Mar 7, 2017
• Expiry date: Jan 24, 2035

Classification

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

Abstract

New magnesium-zinc aluminum alloy bodies and methods of producing the same are disclosed. The new magnesium-zinc aluminum alloy bodies generally include 3.0-6.0 wt. % magnesium and 2.5-5.0 wt. % zinc, where at least one of the magnesium and the zinc is the predominate alloying element of the aluminum alloy bodies other than aluminum, and wherein (wt. % Mg)/(wt. % Zn) is from 0.6 to 2.40, and may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new magnesium-zinc aluminum alloy bodies may realize improved strength and other properties.