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12 8Cr4Mo4V钢中贝氏体的含量与分级温度的关系
Fig.12 Relationship between bainite volume fraction and grading temperature of 8Cr4Mo4V steel