深冷处理时间对M2高速钢红硬性的影响

段元满, 朱丽慧, 吴晓春, 顾炳福

Effect of Deep Cryogenic Treatment Time on Red Hardness of M2 High Speed Steel

DUAN Yuanman, ZHU Lihui, WU Xiaochun, GU Bingfu

表4 不同深冷时间下M2高速钢中的马氏体轴比和含碳量

Table 4 The axial ratio and carbon content of martensite in M2 high speed steel under different deep cryogenic time

Cryogenic time/h 0 1 4 8 12 Martensitic axial ratio 1.032 1.028 1.025 1.024 1.022 Carbon content /% 0.97 0.92 0.85 0.81 0.77