发明公开
EP2787098A4 STEEL MATERIAL WITH EXCELLENT CRASHWORTHINESS AND MANUFACTURING PROCESS THEREFOR
审中-公开
HERMTELLUNGSVERFAHRENDAFÜR的STAHLMATERIAL MIT AUSGEZEICHNETER BRUCHFESTIGKEIT
- 专利标题： STEEL MATERIAL WITH EXCELLENT CRASHWORTHINESS AND MANUFACTURING PROCESS THEREFOR
- 专利标题（中）： HERMTELLUNGSVERFAHRENDAFÜR的STAHLMATERIAL MIT AUSGEZEICHNETER BRUCHFESTIGKEIT
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申请号： EP12853662申请日： 2012-06-14
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公开(公告)号： EP2787098A4公开(公告)日： 2015-11-18
- 发明人: SUWA MINORU , NAKATA NAOKI , NAKASHIMA KOICHI
- 申请人： JFE STEEL CORP
- 专利权人： JFE STEEL CORP
- 当前专利权人： JFE STEEL CORP
- 优先权： JP2011261604 2011-11-30
- 主分类号： C22C38/00
- IPC分类号： C22C38/00 ; C21D8/02 ; C22C38/06 ; C22C38/58
摘要：
A steel with excellent collision energy absorbability and a method for manufacturing the same are provided, wherein the energy absorbability of a collision can be enhanced. A steel with excellent collision energy absorbability, characterized in that the steel composition satisfies Ceq ‰¤ 0.36%, the structure includes a ferritic phase and a hard phase, the volume fraction of the above-described ferritic phase is 75% or more in the whole plate thickness, the hardness thereof is Hv 140 or more and 160 or less, and the average grain size thereof is 2 µm or more.
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