Investigation on the Mechanical Properties at Room Temperature of Q&P Steel Sheet with Ultrahigh Strength

摘要：

Quenching & Partitioning (Q&P) steel is a new type ultrahigh strength steel with transformation induced plasticity (TRIP) effect. Uniaxial tensile experiments of the Q&P steel at room temperature were carried out to investigate the effects of sampling angle and strain rate on its mechanical properties. Experimental results show that the flow stress-strain curve, the hardening component n, the anisotropy coefficient through thickness r and the elongation of the Q&P steel are not sensitive to the sampling angle. However, the hardening component n and the elongation of the Q&P steel decrease with increasing the strain rate. Due to the Q&P steel with TRIP effect, when the strain rate greater, the deformation work will transform to the internal energy of specimen, and the TRIP effect of the Q&P steel will be inhibited, which results in less transformed retained austenite. X ray diffraction experiments were performed to verify it.

关键词： Q&P steel mechanical property strain rate TRIP

作者: LIN Jian-ping MIN Jun-ying YE You XIN Li-jiu DING Lei

作者单位: College of Mechanical Engineering,Tongji University,Shanghai 201804, China Pan Asia Technical Automotive Center Co., Ltd.,Shanghai 201201, China

会议类型: 国际会议

会议名称: The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)

会议地点: 北京

会议语种:英文

页码: 723-726

在线出版日期: 2011-05-31（万方平台首次上网日期，不代表论文的发表时间）