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1 经不同工艺制备的热成形钢和22MnB5钢[18]力学性能总结

Table 1 Summaries of mechanical properties of hot stamping steel manufactured by different heating processes and commercial 22MnB5 steel[18] for comparison

Specimen YS / MPa UTS / MPa TE / % Product of UTS and TE / (GPa·%) 22MnB5[18] 1130 1570 11.5 13.0 CH850 1540 ± 20 2025 ± 30 11.1 ± 0.2 22.4 CH900 1555 ± 22 2050 ± 35 10.6 ± 0.3 21.7 CH950 1485 ± 28 1975 ± 25 10.1 ± 0.3 19.9 FH850 1590 ± 26 2070 ± 30 13.7 ± 0.2 28.4 FH900 1655 ± 21 2155 ± 20 13.4 ± 0.2 28.9 FH950 1675 ± 25 2180 ± 25 13.7 ± 0.4 29.9