IMR OpenIR
Very high cycle fatigue properties of bearing steel with different aluminum and sulfur content
Yang, Chaoyun; Luan, Yikun1; Li, Dianzhong; Li, Yiyi
Corresponding AuthorLuan, Yikun(ykluan@imr.ac.cn)
2018-11-01
Source PublicationINTERNATIONAL JOURNAL OF FATIGUE
ISSN0142-1123
Volume116Pages:396-408
AbstractThis 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.
KeywordVery high cycle fatigue Bearing steel Aluminum content Sulfur content Crack initiation and propagation
Funding OrganizationNational Natural Science Foundation of China
DOI10.1016/j.ijfatigue.2018.06.047
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[U1708252]
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Mechanical ; Materials Science, Multidisciplinary
WOS IDWOS:000450377100038
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/130292
Collection中国科学院金属研究所
Corresponding AuthorLuan, Yikun
Affiliation1.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
Recommended Citation
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.
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