- 专利标题： High-strength steel sheet and high-strength galvanized steel sheet excellent in shape fixability, and manufacturing method thereof
-
申请号： US14234938申请日： 2012-07-27
-
公开(公告)号： US09988700B2公开(公告)日： 2018-06-05
- 发明人: Akinobu Minami , Hiroyuki Kawata , Akinobu Murasato , Yuji Yamaguchi , Natsuko Sugiura , Takuya Kuwayama , Naoki Maruyama , Takamasa Suzuki
- 申请人： Akinobu Minami , Hiroyuki Kawata , Akinobu Murasato , Yuji Yamaguchi , Natsuko Sugiura , Takuya Kuwayama , Naoki Maruyama , Takamasa Suzuki
- 申请人地址： JP Tokyo
- 专利权人： NIPPON STEEL & SUMITOMO METAL CORPORATION
- 当前专利权人： NIPPON STEEL & SUMITOMO METAL CORPORATION
- 当前专利权人地址： JP Tokyo
- 代理机构： Birch, Stewart, Kolasch & Birch, LLP
- 优先权： JP2011-167689 20110729
- 国际申请： PCT/JP2012/069262 WO 20120727
- 国际公布： WO2013/018741 WO 20130207
- 主分类号： C23C2/02
- IPC分类号： C23C2/02 ; C22C38/38 ; C22C38/34 ; C22C38/26 ; C22C38/16 ; C22C38/00 ; C22C38/12 ; C22C38/08 ; C22C38/06 ; C22C38/04 ; C22C38/02 ; C22C38/14 ; C21D8/02 ; C23C2/06 ; C23C2/28 ; C21D9/46 ; C21D1/19 ; C25D5/36 ; C25D7/06 ; C25D3/22
摘要：
The present invention provides a high-strength steel sheet excellent in shape fixability. The high-strength steel sheet contains C, Si, Mn, P, S, Al, N, and O with predetermined contents, in which a retained austenite phase of 5 to 20% in volume fraction is contained, an amount of solid-solution C contained in the retained austenite phase is 0.80 to 1.00% in mass %, WSiγ is 1.10 times or more WSi*, WMnγ is 1.10 times or more WMn*, and when a frequency distribution is measured with respect to a sum of a ratio between WSi and WSi* and a ratio between WAl and WAl*, a mode value of the frequency distribution is 1.95 to 2.05, and a kurtosis is 2.00 or more.
公开/授权文献
信息查询
IPC分类:
