真空分级淬火对8Cr4Mo4V钢组织和性能的影响

于兴福, 王盛宇, 王宇蓬, 杨树新, 杨宇, 苏勇, 冯小川

Effect of Vacuum Graded Quenching on Microstructure and Mechanical Properties of 8Cr4Mo4V Steel

YU Xingfu, WANG Shengyu, WANG Yupeng, YANG Shuxin, YANG Yu, SU Yong, FENG Xiaochuan

图15 经不同真空热处理后8Cr4Mo4V钢的冲击断口形貌

Fig.15 Impact fracture morphologies of 8Cr4Mo4V steel after different vacuum heat treatment processes (a, b) vacuum quenching and tempering; (c, d) vacuum graded quenching and tempering