等温淬火温度对贝/马复相42CrMo钢组织和力学性能的影响

江腾, 李星, 刘汉强, 崔珊, 刘宏亮, 刘军, 栾义坤, 姜周华

Effect of Isothermal Quenching Temperature on Microstructure and Mechanical Properties of Bainite/Martensite Multi-phase 42CrMo Steel

JIANG Teng, LI Xing, LIU Hanqiang, CUI Shan, LIU Hongliang, LIU Jun, LUAN Yikun, JIANG Zhouhua

表3 不同温度等温淬火后试验钢的力学性能

Table 3 Mechanical properties of tested steel after isothermal quenching at different temperature

No. Yield strength / MPa Ultimate tensile strength / MPa Elongation / % Impact energy / J 250# 1352 ± 21.7 1770 ± 15.2 11.6 ± 0.3 41.0 ± 1.6 280# 1399 ± 15.1 1708 ± 21.2 12.3 ± 0.3 51.6 ± 2.0 310# 1266 ± 11.4 1550 ± 31.4 13.0 ± 0.2 55.6 ± 2.5