Very high cycle fatigue properties of bearing steel with different aluminum and sulfur content

doi:10.1016/j.ijfatigue.2018.06.047

IMR OpenIR

	Very high cycle fatigue properties of bearing steel with different aluminum and sulfur content
	Yang, Chaoyun ; Luan, Yikun 1; Li, Dianzhong ; Li, Yiyi
通讯作者	Luan, Yikun(ykluan@imr.ac.cn)
	2018-11-01
发表期刊	INTERNATIONAL JOURNAL OF FATIGUE
ISSN	0142-1123
卷号	116 页码:396-408
摘要	This study aims to clarify the effects of aluminum and sulfur content on fatigue property together with corresponding crack initiation and propagation behavior of bearing steel in the very high cycle fatigue (VHCF) regime. For these purposes, ultrasonic tensile-compression fatigue tests were carried out on fatigue specimens with different directions extracted from bearing steel bars containing different aluminum and sulfur content. As a result, high aluminum content in bearing steel leads to worse fatigue property by forming a large collection area of Al2O3 particles. MnS inclusions can cause fatigue failure of low sulfur bearing steel at the 45-degree angle and contribute to fatigue anisotropy. However, there are no MnS inclusions to be found at crack initiation region of failed specimens with ultralow sulfur content. For the VHCF fracture of bearing steel, fracture surface can be simply divided into four different areas according to crack propagation path except fatigue source. The stress intensity factor at the periphery of fine granular area (FGA) Delta K-FGA can be regarded as the critical driving force for crack propagating through martensite laths. In addition, crack initiation and propagation are the result of mutual coordination and matching of the driving force Delta K, crack propagation speed and microstructure. Dislocations and precipitated carbides play an important role in the formation of FGA by helping form the corresponding nanoscale grain boundary.
关键词	Very high cycle fatigue Bearing steel Aluminum content Sulfur content Crack initiation and propagation
资助者	National Natural Science Foundation of China
DOI	10.1016/j.ijfatigue.2018.06.047
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[U1708252]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary
WOS记录号	WOS:000450377100038
出版者	ELSEVIER SCI LTD
引用统计	被引频次：37[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/130292
专题	中国科学院金属研究所
通讯作者	Luan, Yikun
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Yang, Chaoyun,Luan, Yikun,Li, Dianzhong,et al. Very high cycle fatigue properties of bearing steel with different aluminum and sulfur content[J]. INTERNATIONAL JOURNAL OF FATIGUE,2018,116:396-408.
APA	Yang, Chaoyun,Luan, Yikun,Li, Dianzhong,&Li, Yiyi.(2018).Very high cycle fatigue properties of bearing steel with different aluminum and sulfur content.INTERNATIONAL JOURNAL OF FATIGUE,116,396-408.
MLA	Yang, Chaoyun,et al."Very high cycle fatigue properties of bearing steel with different aluminum and sulfur content".INTERNATIONAL JOURNAL OF FATIGUE 116(2018):396-408.