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

表2 不同工艺样品中原奥氏体晶粒及大角度晶粒尺寸 (μm)

Table 2 Summaries of prior austenite grain and high-angle grain sizes in the specimens subjected to the different heating processes

Specimen Prior austenite grain size High-angle grain size CH850 3.71 ± 0.36 0.94 ± 0.12 CH900 4.88 ± 0.28 1.26 ± 0.18 CH950 6.21 ± 0.32 1.37 ± 0.16 FH850 1.42 ± 0.19 0.62 ± 0.16 FH900 1.46 ± 0.23 0.71 ± 0.15 FH950 1.52 ± 0.21 0.76 ± 0.11