闪速加热对2000 MPa级热成形钢显微组织和力学性能的影响

谢泽东, 丁灿灿, 温鹏宇, 罗海文

Effect of Flash Heating on Microstructure and Mechanical Properties of 2000 MPa Hot Stamping Steel

XIE Zedong, DING Cancan, WEN Pengyu, LUO Haiwen

图9 奥氏体逆转变动力学计算模型示意图，热成形钢在不同温度下闪速加热5 s时渗碳体、铁素体和奥氏体之间的界面移动，以及850℃下界面边界随时间发展的浓度分布

Fig.9 Schematic of the reverse austenitization kinetic simulation (a), the moving interfaces between cementite, ferrite, and austenite in the hot stamping steel during the flash heating to different temperatures and the isothermal holding for 5 s (b); the calculated C concentration (c) and Mn concentration (d) profiles developed near the interface boundaries time during the process of flash heating to 850oC