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:
Feb. 16, 2016
Filed:
Sep. 22, 2010
Sang-hak Lee, Yokohama, JP;
Yoshiki Ono, Yokohama, JP;
Kazuya Ikai, Yokohama, JP;
Hiroaki Matsumoto, Sendai, JP;
Akihiko Chiba, Sendai, JP;
Sang-Hak Lee, Yokohama, JP;
Yoshiki Ono, Yokohama, JP;
Kazuya Ikai, Yokohama, JP;
Hiroaki Matsumoto, Sendai, JP;
Akihiko Chiba, Sendai, JP;
NHK SPRING CO., LTD., Yokohama-shi, JP;
TOHOKU UNIVERSITY, Sendai-shi, JP;
Abstract
A titanium alloy has high strength and superior workability and is preferably used for various structural materials for automobiles, etc. The titanium alloy is obtained by the following production method. An alloy having a structure of α' martensite phase is hot worked at conditions at which dynamic recrystallization occurs. The working is performed at a heating rate of 50 to 800° C./second at a strain rate of 0.01 to 10/second when the temperature is 700 to 800° C. or at a strain rate of 0.1 to 10/second when the temperature is more than 800° C. and less than 1000° C. so as to provide a strain of not less than 0.5. Thus, equiaxed crystals with an average grain size of less than 1000 nm are obtained.