发明公开
- 专利标题: HIGH-STRENGTH STEEL SHEET
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申请号: US18018596申请日: 2021-09-10
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公开(公告)号: US20230295760A1公开(公告)日: 2023-09-21
- 发明人: Genki ABUKAWA , Hiroyuki TANAKA , Masafumi AZUMA , Kazumasa TSUTSUI
- 申请人: NIPPON STEEL CORPORATION
- 申请人地址: JP Tokyo
- 专利权人: NIPPON STEEL CORPORATION
- 当前专利权人: NIPPON STEEL CORPORATION
- 当前专利权人地址: JP Tokyo
- 优先权: JP 20165954 2020.09.30
- 国际申请: PCT/JP2021/033340 2021.09.10
- 进入国家日期: 2023-01-30
- 主分类号: C21D9/46
- IPC分类号: C21D9/46 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C23C2/20
摘要:
This high-strength steel sheet contains predetermined chemical components, in a range from a surface to 1/10 of a sheet thickness in a sheet thickness direction, an average pole density of an orientation group 1 that is an orientation group expressed by ϕ1=0° to 90°, Φ=50° to 60° and ϕ2=45° in terms of an Euler angle is 1.5 or less, an average pole density of an orientation group 2 that is an orientation group expressed by ϕ1=450 to 85°, Φ=85° to 90° and ϕ2=45° in terms of the Euler angle is 1.5 or more, an S value that indicates a degree of randomness of surface properties is 7.5 or less, an E value that indicates a degree of concentration of the surface properties is 0.04 or more, and a tensile strength is 590 MPa or more.
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