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2 深冷不同时间的M2高速钢中碳化物的尺寸分布

Table 2 Classification of carbides on the basis of size in M2 high speed steel under different deep cryogenic time

Cryogenic time Total Ncarbide/mm-2 Classification of carbides on the basis of size (Ncarbide)/mm-2 0~0.5 μm 0.5~1 μm 1~1.5 μm 1.5~2 μm 0 h 413 206 117 80 10 1 h 1201 944 223 33 1 4 h 1951 1694 225 31 1 8 h 2517 2169 324 24 0 12 h 2709 2356 329 23 1