- 专利标题: Sheet Metal Part Formed from a Steel Having a High Tensile Strength and Method for Manufacturing Said Sheet Metal Part
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申请号: US17057299申请日: 2018-05-22
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公开(公告)号: US20210189517A1公开(公告)日: 2021-06-24
- 发明人: Thomas Gerber , Ilse Heckelmann , Bernd Linke
- 申请人: ThyssenKrupp Steel Europe AG , thyssenkrupp AG
- 申请人地址: DE Duisburg; DE Essen
- 专利权人: ThyssenKrupp Steel Europe AG,thyssenkrupp AG
- 当前专利权人: ThyssenKrupp Steel Europe AG,thyssenkrupp AG
- 当前专利权人地址: DE Duisburg; DE Essen
- 国际申请: PCT/EP2018/063356 WO 20180522
- 主分类号: C21D9/46
- IPC分类号: C21D9/46 ; C21D8/02 ; C21D1/673 ; C21D1/19 ; C21D6/00 ; C22C38/54 ; C22C38/50 ; C22C38/48 ; C22C38/44 ; C22C38/42 ; C22C38/06 ; C22C38/04 ; C22C38/02 ; C22C38/46
摘要:
A sheet metal part having a tensile strength Rm≥1000 MPa and a bending angle >70° formed from a flat steel product including, in % by weight: C: 0.10-0.30%, Si: 0.5-2.0%, Mn: 0.5-2.4%, Al: 0.01-0.2%, Cr: 0.005-1.5%, P: 0.01-0.1%, and optionally one or more of Ti, Nb, V, B, Ni, Cu, Mo, and W, with Ti: 0.005-0.1%, Nb: 0.005-0.1%, V: 0.001-0.2%, B: 0.0005-0.015%, Ni: 0.05-0.4%, Cu: 0.01-0.8%, Mo: 0.01-1.0&, and W: 0.001-1.0%, and remainder iron and unavoidable impurities, wherein the structure of the sheet metal part is 40-100% by area plate-shaped bainite, 70-95% of which is made of ferrite, 2-30% of high carbon phases that are plate-shaped with the remainder made up of other components and the remainder of the structure consists of
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