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. 26, 2013
Filed:
Nov. 10, 2009
Minoru Umemoto, Toyohashi, JP;
Yoshikazu Todaka, Toyohashi, JP;
Tadashi Suzuki, Kosai, JP;
Toshiichi Ota, Kosai, JP;
Akihiro Yamashita, Kosai, JP;
Shuji Tanaka, Kosai, JP;
Minoru Umemoto, Toyohashi, JP;
Yoshikazu Todaka, Toyohashi, JP;
Tadashi Suzuki, Kosai, JP;
Toshiichi Ota, Kosai, JP;
Akihiro Yamashita, Kosai, JP;
Shuji Tanaka, Kosai, JP;
Toyohashi University of Technology, Aichi, JP;
Univance Corporation, Shizuoka, JP;
Abstract
A process of forming an ultrafine crystal layer in a workpiece constituted by a metallic material. The process includes: performing a machining operation on a surface of the workpiece, so as to impart a large local strain to the machined surface of the workpiece, where the machining operation causes the machined surface of the workpiece to be subjected to a plastic working that causes to have large local strain in the form of a true strain of at least one, such that the ultrafine crystal layer is formed in a surface layer portion of the workpiece that defines the machined surface of the workpiece. Also disclosed are a nanocrystal layer forming process, a machine component having the ultrafine crystal layer or the nanocrystal layer, and a machine component producing process of producing the machine component.