发明公开
- 专利标题： HIGH-STRENGTH STEEL SHEET HAVING EXCELLENT HYDROGEN EMBRITTLEMENT RESISTANCE AND MAXIMUM TENSILE STRENGTH OF 900 MPa OR MORE, AND PROCESS FOR PRODUCTION THEREOF
- 专利标题（中）： 随着对生产优秀氢脆和900MPa以上最大断裂强度和加工高强度钢板
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申请号： EP10833432.7申请日： 2010-11-30
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公开(公告)号： EP2508640A1公开(公告)日： 2012-10-10
- 发明人: AZUMA, Masafumi , SUZUKI, Noriyuki , MARUYAMA, Naoki , MURASATO, Akinobu , SAKUMA, Yasuharu , KAWATA, Hiroyuki , WAKABAYASHI, Chisato
- 申请人： Nippon Steel Corporation
- 申请人地址： 6-1, Marunouchi 2-chome Chiyoda-ku Tokyo 100-8071 JP
- 专利权人： Nippon Steel Corporation
- 当前专利权人： Nippon Steel Corporation
- 当前专利权人地址： 6-1, Marunouchi 2-chome Chiyoda-ku Tokyo 100-8071 JP
- 代理机构： Vossius & Partner
- 优先权： JP2009272075 20091130; JP2010208328 20100916
- 国际公布： WO2011065591 20110603
- 主分类号： C22C38/06
- IPC分类号： C22C38/06 ; C22C38/58 ; C21D9/46 ; C23C2/06 ; C23C2/28 ; C25D5/26
摘要：
High strength steel plate with an ultimate tensile strength of 900 MPa or more which is excellent in hydrogen embrittlement resistance characterized in that, in the structure of the steel plate, (a)by volume fraction, ferrite is present in 10 to 50%, bainitic ferrite and/or bainite in 10 to 60%, and tempered martensite in 10 to 50%, and (b) iron-based carbides which contain Si or Si and Al in 0.1% or more are present in 4×10 8 (particles/mm 3 ) or more.
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