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:
Oct. 12, 2010
Filed:
Dec. 15, 2005
Masaki Kumagai, Nagoya, JP;
Tadashi Minoda, Nagoya, JP;
Koji Tanaka, Nagoya, JP;
Sumitomo Light Metal Industries, Ltd., Minato-Ku, JP;
Abstract
A method of joining aluminum alloy members, including the steps of: obtaining a joined body including: (a) contacting aluminum alloy members each made of a 6000 series aluminum alloy with T4 temper; and (b) performing a friction stir welding operation on a contact portion of the aluminum alloy members at which they are held in contact with each other, so as to form a stir zone at the contact portion; and performing, on the obtained joined body, an underaging treatment which is an artificial aging treatment and which is completed before hardness of the stir zone reaches maximum hardness, the underaging treatment being performed before GP zones are formed at the stir zone of the joined body.