发明名称 |
COLD ROLLED STEEL SHEET HAVING SUPERIOR FORMABILITY , PROCESS FOR PRODUCING THE SAME |
摘要 |
Disclosed herein is a Ti-based IF steel in which fine precipitates, such as CuS precipitates, having a size of 0.2 mum or less are distributed. The distribution of fine precipitates in the Ti-based IF steel enhances the yield strength and lowers the in-plane anisotropy index. The nanometer-sized precipitates allow the formation of minute crystal grains. As a result, dissolved carbon is present in a larger amount in the crystal grain boundaries than within the crystal grains, which is advantageous in terms of room-temperature non-aging properties and bake hardenability. |
申请公布号 |
EP1888799(A4) |
申请公布日期 |
2011.01.26 |
申请号 |
EP20060732895 |
申请日期 |
2006.05.03 |
申请人 |
POSCO |
发明人 |
YOON, JEONG-BONG;HAN, SANG-HO;KIM, SUNG-IL;CHIN, KWANG-GEUN;KIM, HO-SEOK;CHUNG, JIN-HEE;PARK, MAN-YOUNG |
分类号 |
C22C38/00;C21D8/02 |
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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