喷射成形含铌M3型高速钢组织与性能研究

王和斌, 侯陇刚, 张金祥, 卢林, 于一鹏, 崔华, 张济山

MICROSTRUCTURES AND PROPERTIES OF SPRAY FORMED Nb-CONTAINING M3 HIGH SPEED STEEL

WANG Hebin, HOU Longgang, ZHANG Jinxiang, LU Lin, YU Yipeng, CUI Hua, ZHANG Jishan

表3 1180和1220 ℃淬火后碳化物体积分数、残余奥氏体含量、a-Fe晶格常数以及淬火态硬度

Temperature	Steel	X_t (X_m)	a(a-Fe)	V_a	V_d	V_r	Hardness
℃	Steel	X_t (X_m)	a(a-Fe)	V_a	V_d	V_r	HRC
℃		%	nm	%	%	%	HRC
1180	M3	6.06 (1.38)	0.29043	27.84	21.78	17.12	65.8
	MN1	8.11 (3.87)	0.29099	31.55	23.44	21.56	66.1
1220	M3	5.93 (2.38)	0.29117	27.84	21.91	25.43	64.1
	MN1	7.39 (3.44)	0.29154	31.55	24.16	23.33	64.8