超洁净轴承钢中夹杂物与滚动接触疲劳寿命的关系

孙飞龙, 耿克, 俞峰, 罗海文

Relationship of Inclusions and Rolling Contact Fatigue Life for Ultra-Clean Bearing Steel

SUN Feilong, GENG Ke, YU Feng, LUO Haiwen

表5 3组钢滚动接触疲劳寿命与夹杂物数量密度及SEV和GPD法预测的最大夹杂物特征尺寸对比

Table 5 The measured density of inclusion and CSMIs predicted by both SEV and GPD in comparison with L₁₀ and L₅₀ values of RCF lives for the three steels

No.	L₁₀ / 10⁷ cyc	L₅₀ / 10⁷ cyc	N_At	x_v	x_v (GPD) / μm
	(95% confidence	(95% confidence	mm^-2	(SEV)	Sul	Sul.-O	Al₂O₃	Glo.-O	TiN
	intervals)	intervals)		μm
1	0.54	3.26	2.44	46.96	~	6.63	4.70	7.41	16.01
	(0.25, 1.48)	(1.98, 4.90)
2	0.70	2.41	5.67	22.92	6.30	5.24	5.52	~	14.86
	(0.35, 1.30)	(1.68, 3.34)
3	1.07	3.34	3.81	31.35	11.34	4.33	8.06	~	14.40
	(0.45, 1.90)	(2.45, 5.15)