Microstructure, Properties and Crack Suppression Mechanism of High-speed Steel Fabricated by Selective Laser Melting at Different Process Parameters

Chinese Journal of Mechanical Engineering

Table 4 The hardness and tensile properties of M2 HSS prepared under different SLM processes

NO.	The level of each factor				H (HRC)	σ (MPa)	E (J/mm³)
NO.	P	v	h	T	H (HRC)	σ (MPa)	E (J/mm³)
1	180	870	0.06	50	54.20	219.49	114.94
2	180	960	0.07	100	50.27	506.58	89.29
3	180	1050	0.08	150	50.93	714.97	71.43
4	180	1140	0.09	200	49.83	607.93	58.48
5	200	870	0.07	150	57.23	185.38	109.47
6	200	960	0.06	200	58.53	936.92	115.74
7	200	1050	0.09	50	42.03	253.46	70.55
8	200	1140	0.08	100	51.05	719.75	73.10
9	220	870	0.08	200	58.97	782.34	105.36
10	220	960	0.09	150	56.85	619.75	84.88
11	220	1050	0.06	100	56.83	716.78	116.40
12	220	1140	0.07	50	54.43	150.87	91.90
13	240	870	0.09	100	43.40	214.43	102.17
14	240	960	0.08	50	56.77	246.15	104.17
15	240	1050	0.07	200	59.17	705.02	108.84
16	240	1140	0.06	150	57. 00	549.55	116.96