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:
Jan. 26, 1988
Filed:
Oct. 15, 1985
Applicant:
Inventor:
Amit K Ghosh, Thousand Oaks, CA (US);
Assignee:
Rockwell International Corporation, El Segundo, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C22F / ;
U.S. Cl.
CPC ...
148 / ; 148415 ; 148416 ; 148417 ; 420902 ;
Abstract
A method is provided for imparting a very fine grain size to aluminum alloys, including alloys in the form of sheet or heavy sections such as forging billets. The alloy is first aged to form precipitates. The aged alloy is then deformed along its three principal axes in successive operations until a cummulative true strain of at least 8 is achieved.