Tensile Mechanical Behavior of Cold Rolled Si-Mn Steel under Different Strain Rates

摘要：

Tensile mechanical behavior of cold rolled Si-Mn steel after TRIP(TRansformation Induced Plasticity) and DP(Dual Phase) treatment were investigated under different strain rates. The dynamic tensile test was carried out using the rotation disk bar-bar tensile impact apparatus. At static tension test condition, the values of total elongation for TRIP steel was approximately 2-3 times higher than DP steel because of TRIP effect; the DP steel showed a higher tensile strength because of 39.6vol％ martensite in the matrix. The results of tension test at high strain rate condition were different. For the studied steel, the elongation increased with increasing strain rate due to softening of matrix caused by adiabatic heating; in addition, TRIP steel at low strain rate was always higher than that at high strain rate because progressive strain induced retained austenite was suppressed at high strain rate.

关键词： cold rolled Si-Mn steel TRIP and DP treatment mechanical properties stain rate

作者: HE Yan-lin LIN Yun-tao HE Zhong-ping ZHU Na-qiong LI Lin

作者单位: School of Materials Science and Engineering，Shanghai University，Shanghai 200072，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: 919-922

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）