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:
Apr. 27, 2010
Filed:
Nov. 06, 2007
Seung Hwan Park, Hitachi, JP;
Satoshi Hirano, Hitachi, JP;
Yutaka Sato, Sendai, JP;
Kyosuke Yoshimi, Sendai, JP;
Hiroyuki Kokawa, Sendai, JP;
Seung Hwan Park, Hitachi, JP;
Satoshi Hirano, Hitachi, JP;
Yutaka Sato, Sendai, JP;
Kyosuke Yoshimi, Sendai, JP;
Hiroyuki Kokawa, Sendai, JP;
Hitachi, Ltd., Tokyo, JP;
Tohoku University, Sendai-shi, unknown;
Abstract
An object of the present invention is to provide a friction stir welding tool which enables friction stir welding of a wide range of materials, from low-melting temperature metallic materials including aluminum to high-melting temperature metallic materials including steel. An entire friction stir welding tool or a tool tip including a pin is made of Mo alloy having a dual phase microstructure of Mo and intermetallic compound MoSiB. It is desirable that the Mo alloy be composed of 6.0 to 10.0 mol % of Si, 10.0 to 20.0 mol % of B, and 20 to 60% of Mo-phase volume content. This Mo alloy tool has excellent high-temperature strength and wear-resistance properties and hardly deform and wear when used for the welding of steel.