- 专利标题： Steel sheet, member, and methods for producing them
-
申请号： US17415462申请日： 2019-10-25
-
公开(公告)号： US12071682B2公开(公告)日： 2024-08-27
- 发明人: Shimpei Yoshioka , Yoshihiko Ono , Yuma Honda , Nobuyuki Nakamura
- 申请人： JFE STEEL CORPORATION
- 申请人地址： JP Tokyo
- 专利权人： JFE STEEL CORPORATION
- 当前专利权人： JFE STEEL CORPORATION
- 当前专利权人地址： JP Tokyo
- 代理机构： Oliff PLC
- 优先权： JP 18238964 2018.12.21
- 国际申请： PCT/JP2019/041818 2019.10.25
- 国际公布： WO2020/129403A 2020.06.25
- 进入国家日期： 2021-06-17
- 主分类号： C22C38/58
- IPC分类号： C22C38/58 ; C21D8/02 ; C22C38/00 ; C22C38/02 ; C22C38/06 ; C22C38/42 ; C22C38/44 ; C22C38/46 ; C22C38/48 ; C22C38/50 ; C22C38/54 ; C23C2/02
摘要：
A steel sheet having a specified chemical composition and a tensile strength of 1,320 MPa or more, and methods for producing the steel sheet. The steel sheet has a specified microstructure including martensite and bainite, the total area fraction of the martensite and the bainite being 92% or more and 100% or less, the balance being one or more selected from ferrite and retained austenite. The forumulae [% Ti]+[% Nb]>0.007 and [% Ti]×[% Nb]2≤7.5×10−6 are satisfied in the chemical composition.
公开/授权文献
- US20220090247A1 STEEL SHEET, MEMBER, AND METHODS FOR PRODUCING THEM 公开/授权日：2022-03-24
信息查询
