公开(公告)号：US20240182994A1

公开(公告)日：2024-06-06

申请号：US18526078

申请日：2023-12-01

申请人： SINTOKOGIO, LTD.

发明人： Yuta Saito ,  Atsuki Kurokawa ,  Kan Aoki

IPC分类号： C21D8/00 ,  C21D1/18 ,  C21D6/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46

CPC分类号： C21D8/005 ,  C21D1/18 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C21D2201/00 ,  C21D2211/001

摘要： The manufacturing method of the reference piece for measuring retained austenite includes performing quenching and tempering a metal member after performing nano-crystallization on at least a portion of a surface of the metal member.

公开(公告)号：US11885001B2

公开(公告)日：2024-01-30

申请号：US17957295

申请日：2022-09-30

申请人： SINTOKOGIO, LTD.

发明人： Yuta Saito

IPC分类号： C22F1/04

CPC分类号： C22F1/04

摘要： A manufacturing method according to one aspect includes performing a first process of refining crystal grains of the metal member, performing a second process of releasing residual stress of the metal member after the first process, and performing a third process of applying residual stress to the metal member after the second process.