发明名称 |
METHOD FOR MANUFACTURING TWINNING-INDUCED PLASTICITY STEEL SHEET BY UTILIZING DYNAMIC RECRYSTALLIZATION AND TWINNING-INDUCED PLASTICITY STEEL MANUFACTURED BY THE SAME |
摘要 |
The present invention relates to a method for manufacturing a twinning induced plasticity (TWIP) steel sheet having improved strain rate and yield strength and a TWIP steel sheet manufactured by the method. Disclosed is the method for manufacturing a TWIP steel sheet and the TWIP steel sheet manufactured by the method comprises the following steps of: heating TWIP steel composed of 15-20 wt% of Mn, 0.5-1.0 wt% of C, 0.5-2.0 wt% of Al, and the remainder Fe and other inevitable impurities; hot-rolling the heated TWIP steel; cooling the hot-rolled TWIP steel; warm-rolling the cooled TWIP steel; and winding the warm-rolled TWIP steel. [Reference numerals] (S110) Heat a TWIP steel sheet at 1100-1200°C; (S120) Hot-roll the heated TWIP steel sheet; (S125) Reheat the hot-rolled TWIP steel sheet up to 500-700°C after cooling the TWIP steel sheet down to room temperature; (S130) Cool the TWIP steel sheet down to 500-700°C; (S140) Warm-roll the TWIP steel sheet up to 500-700°C; (S150) Wind the TWIP steel sheet at 500°C or below |
申请公布号 |
KR20140047954(A) |
申请公布日期 |
2014.04.23 |
申请号 |
KR20120114358 |
申请日期 |
2012.10.15 |
申请人 |
POSCO;POSTECH ACADEMY-INDUSTRY FOUNDATION |
发明人 |
LEE, CHONG SOO;LEE, JAE SEUNG;CHUN, YOUNG SOO |
分类号 |
C21D8/02;B21B3/00;C22C38/04 |
主分类号 |
C21D8/02 |
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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