| 发明名称 |
Ferritic Lightweight High-Strength Steel Sheet Having Excellent Stiffness and Ductility, and Method of Manufacturing the Same |
| 摘要 |
Provided is a ferritic lightweight high-strength steel sheet having excellent stiffness and ductility and a method of manufacturing the same. The steel sheet including 0.02 wt % to 0.1 wt % of carbon (C), 4 wt % to 15 wt % of manganese (Mn), 4 wt % to 10 wt % of aluminum (Al), 2.0 wt % or less (excluding 0) of silicon (Si), 0.01 wt % to 0.3 wt % of titanium (Ti), 0.005 wt % to 0.2 wt % of antimony (Sb), and iron (Fe) as well as unavoidable impurities as a remainder, and having a value of 0.25×Ti/C ranging from 0.17 to 1.0 and a value of Mn/Al×Log(C×Ti×10000) ranging from 1.0 to 10. |
| 申请公布号 |
US2015218668(A1) |
申请公布日期 |
2015.08.06 |
| 申请号 |
US201214421024 |
申请日期 |
2012.12.26 |
| 申请人 |
POSCO |
发明人 |
Kwak Jai-Hyun;Lee Kyoo-Young;Chin Kwang-Geun |
| 分类号 |
C21D9/46;C21D6/00;C22C38/60;C22C38/14;C22C38/06;B21C47/02;C22C38/02;C22C38/00;C23C30/00;B32B15/01;B21B1/26;B21B1/28;C21D8/02;C22C38/04 |
主分类号 |
C21D9/46 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A ferritic lightweight high-strength steel sheet comprising:
0.02 wt % to 0.1 wt % of carbon (C); 4 wt % to 15 wt % of manganese (Mn); 4 wt % to 10 wt % of aluminum (Al); 2.0 wt % or less (excluding 0) of silicon (Si); 0.01 wt % to 0.3 wt % of titanium (Ti); 0.005 wt % to 0.2 wt % of antimony (Sb); and iron (Fe) as well as unavoidable impurities as a remainder, wherein a value of 0.25×Ti/C is in a range of 0.17 to 1.0 and a value of Mn/Al×Log(C×Ti×10000) is in a range of 1.0 to 10. |
| 地址 |
Pohang-si KR |
