发明授权
- 专利标题： Steel sheet having high young's modulus, hot-dip galvanized steel sheet using the same, alloyed hot-dip galvanized steel sheet, steel pipe having high young's modulus, and methods for manufacturing the same
- 专利标题（中）： 具有高年龄模量的钢板，使用该钢板的热浸镀锌钢板，合金化热浸镀锌钢板，具有较高模量的钢管及其制造方法
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申请号： US13245295申请日： 2011-09-26
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公开(公告)号： US08802241B2公开(公告)日： 2014-08-12
- 发明人: Natsuko Sugiura , Naoki Yoshinaga , Shunji Hiwatashi , Manabu Takahashi , Koji Hanya , Nobuyoshi Uno , Ryoichi Kanno , Akihiro Miyasaka , Takehide Senuma
- 申请人： Natsuko Sugiura , Naoki Yoshinaga , Shunji Hiwatashi , Manabu Takahashi , Koji Hanya , Nobuyoshi Uno , Ryoichi Kanno , Akihiro Miyasaka , Takehide Senuma
- 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： JP2004-218132 20040727; JP2004-330578 20041115; JP2005-019942 20050127; JP2005-207043 20050715
- 主分类号： C22C38/04
- IPC分类号： C22C38/04 ; C22C38/12 ; C22C38/14 ; B32B15/18
摘要：
In an embodiment of a steel sheet having high Young's modulus, the steel can include in terms of mass %, e.g., C: 0.0005 to 0.30%, Si: 2.3% or less, Mn: 2.7 to 5.0%, P: 0.15% or less, 0.015% or less, Mo: 0.15 to 1.5%, B: 0.0006 to 0.01%, and Al: 0.15% or less, with the remainder being Fe and unavoidable impurities. One or both of {110} pole density and {110} pole density in the ⅛ sheet thickness layer can be 10 or more, and a Young's modulus in a rolling direction can be more than 230 GPa. Other embodiments can include, e.g., Mn: 0.1 to 5.0%, N: 0.01% or less, and one or more of Mo: 0.005 to 1.5%, Nb: 0.005 to 0.20%, Ti: at least 48/14×N (mass %) and 0.2% or less, and B: 0.0001 to 0.01%, at a total content of 0.015 to 1.91 mass %.
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