高温回火对低碳中锰钢微观组织和力学性能的影响

展之德, 刘琪琪, 董敬文, 祁震, 罗小兵, 柴锋, 师仲然

Effect of Tempering Temperatures on Microstructure and Mechanical Property of a Test Low-carbon Medium-manganese Steel

ZHAN Zhide, LIU Qiqi, DONG Jingwen, QI Zhen, LUO Xiaobing, CHAI Feng, SHI Zhongran

表1 4Mn钢的拉伸性能

Table 1 Tensile properties of 4Mn steel

Sample Rm / MPa Rp0.2 / MPa A / % Rp0.2 / Rm 600 oC 896 ± 0.5 857 ± 3.0 23 ± 0.5 0.96 640 oC 913 ± 6.0 700 ± 9.0 25 ± 0.5 0.77 670 oC 1114 ± 6.5 654 ± 3.0 17 ± 0.5 0.59