专利名称：HOT-ROLLED STEEL SHEET
发明人：SUGIURA Natsuko,YOSHIDA Mitsuru,SHUTO
Hiroshi,YOKOI Tatsuo,WAKITA Masayuki
申请号：EP15882647申请日：20150220公开号：EP3260566A4公开日：20180912
摘要：A hot-rolled steel sheet includes a predetermined chemical composition, and astructure which includes, by area ratio, ferrite and bainite in a range of 75% to 95% intotal, and martensite in a range of 5% to 20%, in which in the structure, in a case where aboundary having an orientation difference of equal to or greater than 15° is set as a grainboundary, and an area which is surrounded by the grain boundary, and has an equivalentcircle diameter of equal to or greater than 0.3 µm is defined as a grain, the ratio of thegrains having an intragranular orientation difference in a range of 5° to 14° is, by arearatio, in a range of 10% to 60%.
申请人：Nippon Steel & Sumitomo Metal Corporation
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容