The Microstructure and Formability Study on DP Steel of Lightweight Automobile
Dual phase (DP) steel is a high strength steel for auto-panel. In this paper, mechanical property, forming ability, baked-hardening and work hardening properties of high strength steel DP450 are studied by experiments, and compared with those of steel MS6000.And theoretical research on predicting the forming limit of steel DP450 by the NADDRG model. The established mathematic model for relativity is of practical usefulness. Experimental results reveal that the yield strength of steel DP450 is about 7.2% lower than the MS6000,and the break strength increases by 18.9%,while the elongation increases by 19%.The strain hardening exponent of steel DP450 are superior to those of MS6000.The results show that mechanical property of high strength steel DP450 is better than that of MS6000,while forming ability of DP450 is not lower than that of MS6000.And baked-hardening and work hardening properties of steel DP450 are better than those of MS6000.The steel sheet DP450 owned a good forming ability.
Jin WU Dasen BI Liang CHU Jian ZHANG Yuntao LI
School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384,China School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384,China School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384,China School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
国际会议
桂林
英文
1-9
2010-11-16（万方平台首次上网日期，不代表论文的发表时间）