Effects of double quenching on fatigue properties of high carbon bearing steel with extra-high purity

被引：29
|
作者：
Cao, Zhaoxi [1 ]
Shi, Zhiyue [2 ]
Yu, Feng [2 ]
Sugimoto, Koh-ichi [3 ]
Cao, Wenquan [2 ]
Weng, Yuqing [2 ]
机构：
[1] Univ Sydney, Sci Fac, Sydney, NSW 2006, Australia
[2] CISRI, Beijing 100081, Peoples R China
[3] Shinshu Univ, Matsumoto, Nagano 3900802, Japan
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2019年 / 128卷
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Bearing steel; Extra-high purity steel; Double quenching; Fatigue property; Inclusion characters; Weibull distribution; REFINEMENT; TOUGHNESS; LIFE;
D O I：
10.1016/j.ijfatigue.2019.06.036
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this study, high carbon bearing steel of GCr15 (100Cr6) is applied to explore the double quenching effects on both rotated bending fatigue strength (RBF-strength) and rolling contact fatigue life (RCF-life). The RBF-strength and RCF-life is about 1000 MPa and 1.1 x 10(7) cycles under a maximum Hertzian stress of 4.5 GPa for the single quenched and tempered specimens but about 1030 MPa and 5.6 x 10(7) cycles for the double quenched and tempered specimens. The enhancement of RBF-strength and RCF-life are attributed to the increased impact toughness due to the refinements of both carbides and prior austenite grain size.
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页数：6
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