The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 18, 2012
Filed:
Jan. 16, 2009
Cindie Giummarra, Pittsburgh, PA (US);
Roberto J. Rioja, Murrysville, PA (US);
Gary H. Bray, Murrysville, PA (US);
Paul E. Magnusen, Pittsburgh, PA (US);
Cindie Giummarra, Pittsburgh, PA (US);
Roberto J. Rioja, Murrysville, PA (US);
Gary H. Bray, Murrysville, PA (US);
Paul E. Magnusen, Pittsburgh, PA (US);
Alcoa Inc., Pittsburgh, PA (US);
Abstract
Aluminum alloy having an improved combination of properties are provided. In one aspect, a method for producing the alloy includes preparing an aluminum alloy for artificial aging and artificially aging the alloy. In one embodiment, the artificially aging step includes aging the aluminum alloy at a temperature of at least about 250° F., and final aging the aluminum alloy at a temperature of not greater than about 225° F. and for at least about 20 hours. These aluminum alloys realize an improved combination of properties, including improved strength with at least equivalent fatigue crack growth resistance.