Influence of the Inclusion Shape on the Rolling Contact Fatigue Life of Carburized Steels

被引：33
|
作者：
Neishi, Yutaka [1 ]
Makino, Taizo [1 ]
Matsui, Naoki [1 ]
Matsumoto, Hitoshi [2 ]
Higashida, Masashi [2 ]
Ambai, Hidetaka [2 ]
机构：
[1] SumitomoMetal Ind Ltd, Corp Res & Dev Labs, Amagasaki, Hyogo 6600891, Japan
[2] Sumitomo Metal Ind Ltd, Bar & Wire Rod Co, Kokura Steel Works, Prod Dev Dept, Amagasaki, Hyogo 6600891, Japan
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2013年 / 44A卷 / 05期
关键词：
BEARING STEELS; CLUSTERS;
D O I：
10.1007/s11661-012-1344-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
It has been well known that the flaking failure in rolling contact fatigue (RCF) originates from nonmetallic inclusions in steels, and their apparent size is one of the important factors affecting RCF life. However, the influence of inclusion shape on the RCF life has not been fully clarified. In this study, attention was paid to the influence of the inclusion shape on the RCF life. This was evaluated by using carburized JIS-SCM420 (SAE4320) steels that contained two different shapes of MnS-stringer type and spheroidized type-as inclusions. Sectional observations were made to investigate the relation between the occurrence of shear crack in the subsurface and the shape of MnS. It was found that the RCF life was well correlated with the length of MnS projected to the load axis, and the initiation of shear crack in subsurface was accelerated as the length of MnS increased. DOI: 10.1007/s11661-012-1344-9 (C) The Minerals, Metals & Materials Society and ASM International 2012
引用
收藏
页码：2131 / 2140
页数：10
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