发明名称 |
HIGH STRENGTH STEEL PRODUCT EXCELLENT IN CHARACTERISTICS OF RESISTANCE TO HYDROGEN EMBRITTLEMENT |
摘要 |
The invention provides a steel material with satisfactory hydrogen embrittlement resistance, and particularly it relates to high-strength steel with satisfactory hydrogen embrittlement resistance and a strength of 1200 MPa or greater, as well as a process for production thereof. At least one simple or compound deposit of oxides, carbides or nitrides as hydrogen trap sites which trap hydrogen with a specific trap energy is added to steel, where the mean sizes, number densities, and length-to-thickness ratios (aspect ratio) are in specific ranges. By applying the specific steel components and production process it is possible to obtain high-strength steel with excellent hydrogen embrittlement resistance. <IMAGE> |
申请公布号 |
EP1598437(A4) |
申请公布日期 |
2006.11.22 |
申请号 |
EP20040703503 |
申请日期 |
2004.01.20 |
申请人 |
NIPPON STEEL CORPORATION |
发明人 |
YAMASAKI, SHINGO;HIRAKAMI, DAISUKE;TARUI, TOSHIMI;NISHIDA, SEIKI |
分类号 |
C22C38/00;C22C38/12;C22C38/58 |
主分类号 |
C22C38/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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