Flow Behavior of Ultra-high Strength Boron Steel at Elevated Temperature
Ultra-high strength boron steel is widely used in a new hot stamping technology which is hot formed and die quenched simultaneously in order to obtain stamping parts with 1500MPa tensile strength or higher. Tensile experiments were carried out with ultra-high strength boron steel in a range of temperature 500 ℃~860 ℃and strain rate 0.01/s~1/s with the thermal simulation testing machine Gleeble 3800, and the stress-strain curves were obtained. The influences of the deformation temperature and strain rate on the stress-strain curves were analyzed. The results show that hot behavior at elevated temperature of ultra-high strength boron steel consists of strain hardening and dynamic recovery mechanism, which can be accurately described by the mathematic model.
Jun Bao Hongsheng Liu ZhongWen Xing Baoyu Song Yuying Yang
School of Mechanical and Electrical Engineering, Harbin Institute of Technology, Harbin,Heilongjiang School of Material Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang Pro
国际会议
桂林
英文
1-5
2010-11-16（万方平台首次上网日期，不代表论文的发表时间）