2014, Volume 16, Issue 1
Strategic Study of CAE >> 2014, Volume 16, Issue 1
Three kinds of strength level of DP steel formability
1. China Automotive Engineering Research Institute Co. Ltd., Chongqing 400039, China;
2. Metal Forming Research Group POSCO Global R&D Center, Korea 406-840
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Abstract
For three different strength level， different thicknesses were systematically formability test，Comprehensive analysis of the mechanical properties of （dual- phase）DP steel，cupping performance，cold bending，forming limit. Studies show that：Elongation and the value of n for DP steel decreases with rising intensity level. Cupping test results show that the height of the cupping with the DP steels up strength level decreases，and increases with increasing thickness of the material. Duplex steel cold bending properties with increased material strength level decreases. Bulging under biaxial strain tests showed that DP steel has good formability. Based on mild steel FLD0 empirical formula can’t be directly applied to the DP steel.
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References
[ 1 ] 王瑞珍，罗海文，董 瀚. 汽车用高强度钢板的最新研究进 展[J]. 中国冶金，2006 16（9）：1-9 . link1
[ 2 ] 羊 军，胡 伟，王武荣，等. 1 000 MPa级DP钢的准静态拉伸 行为与应变速率的关系[J]. 钢铁研究学报，2011，23（7）：39-42. link1
[ 3 ] 蒋浩民，陈庆欣，苏海波，等. 双相钢成形性能实验研究[J]. 锻压 技术，2007，32（6）：76-78.
[ 4 ] 马鸣图，吴宝榕. 双相钢——物理和力学冶金 [M].（第二版）. 北京：冶金工业出版社，2010.
[ 5 ] 刁可山，曹 猛，蒋浩民，等. DP600高强钢零件冲压成形有限 元仿真及试验[J]. 塑性工程学报，2010，17（3）：66-69. link1
[ 6 ] Hudgins A W，Matlock D K，Speer J G. Shear failures and bending of advanced high strength steels[J]. International Deep Drawing Research Group（IDDRG），2009：53-64.
[ 7 ] 赵征志，赵爱民，唐 荻，等. 热轧双相钢的组织与性能研究[J]. 工艺装备，2010（5）：44-46.
[ 8 ] 陈新平，蒋浩民．汽车钢板胀形区成形极限图的预测与验 证[J]. 金属成形工艺，2003，21（6）：86-88. link1
[ 9 ] 陈新平，汪承璞. 一种预测左半部成形极限图的简单方法[J]． 金属成形工艺，2000，18（4）：4-6. link1
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