发明申请
US20070017609A1 Steel with excellent delayed fracture resistance and tensile strength of 1600 MPa class or more, its shaped articles, and methods of production of the same
有权
具有优异的延迟断裂韧性和1600MPa级以上的拉伸强度的钢，其成型制品及其制造方法
- 专利标题： Steel with excellent delayed fracture resistance and tensile strength of 1600 MPa class or more, its shaped articles, and methods of production of the same
- 专利标题（中）： 具有优异的延迟断裂韧性和1600MPa级以上的拉伸强度的钢，其成型制品及其制造方法
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申请号： US11490955申请日： 2006-07-21
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公开(公告)号： US20070017609A1公开(公告)日： 2007-01-25
- 发明人: Manabu Kubota , Suguru Yoshida , Toshimi Tarui , Hideki Matsuda , Koki Mizuno , Tadashi Ohya
- 申请人： Manabu Kubota , Suguru Yoshida , Toshimi Tarui , Hideki Matsuda , Koki Mizuno , Tadashi Ohya
- 优先权： JP2005-212215 20050722
- 主分类号： C22C38/12
- IPC分类号： C22C38/12
摘要：
Steel and steel shaped articles with an excellent delayed fracture resistance and a tensile strength of the 1600 MPa class or more, containing, by mass %, C: 0.20 to 0.60%, Si: 0.50% or less, Mn: over 0.10% to 3%, Al: 0.005 to 0.1%, Mo: over 3.0% to 10%, and, as needed, one or more of W: 0.01 to 10%, V: 0.05 to 1%, Ti: 0.01 to 1%, Nb: 0.01 to 1%, Cr: 0.10 to 2%, Ni: 0.05 to 1%, Cu: 0.05 to 0.5%, and B: 0.0003 to 0.01%, and a balance of Fe and unavoidable impurities and, further, a method of production comprising shaping the above steel to a desired shape (for example, a bolt shape), quenching it, then tempering it at 500 to 750° C. in temperature range.
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