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9 分级温度不同的8Cr4Mo4V钢回火后二次碳化物的含量和平均尺寸

Fig.9 Volume fraction and average size of secondary carbides in 8Cr4Mo4V steel after tempering at different grading temperatures