Very high cycle fatigue behavior of bearing steel with rare earth addition

doi:10.1016/j.ijfatigue.2019.105263

CORC > 金属研究所 > 中国科学院金属研究所

	Very high cycle fatigue behavior of bearing steel with rare earth addition
	Yang, Chaoyun 2,3; Luan, Yikun 2,3; Li, Dianzhong 2,3; Li, Yiyi 2,3; Tariq, Naeem ul Haq 1,4
刊名	INTERNATIONAL JOURNAL OF FATIGUE
	2020-02-01
卷号	131 页码:13
关键词	Very high cycle fatigue Bearing steel Rare earth Inclusions Crack initiation and propagation
ISSN号	0142-1123
DOI	10.1016/j.ijfatigue.2019.105263
通讯作者	Luan, Yikun(ykluan@imr.ac.cn) ; Li, Dianzhong(dzli@imr.ac.cn)
英文摘要	This study aims to clarify the effect of rare earth (RE) addition on the very high cycle fatigue (VHCF) behavior of high-carbon chromium bearing steel. For this purpose, ultrasonic tension-compression fatigue tests were carried out on specimens extracted from bearing steels with and without RE addition. As a result, RE addition can prolong the fatigue life of bearing steel over 10 times and improve the fatigue limit at 10(9) cycles by 9.4% from 720 MPa to 788 MPa, which mainly result from the modification of RE elements to common CaO-Al2O3-MgOSiO2-CaS inclusions, forming complex RE inclusions and leading to the decrease of inclusion size and the volume fraction of inclusions in bearing steel with RE addition. On the VHCF fracture of bearing steels with and without RE addition, both internal cracking mode and interface cracking mode exist at inclusions. Compared with bearing steel with RE addition, bearing steel without RE addition exhibits a longer crack initiation life due to stronger internal binding force of complex inclusions and interfacial binding force between complex inclusions and the matrix. However, smaller complex RE inclusions make crack propagation life of the former significantly longer than that of the latter. In addition, fine granular area (FGA) can be used to estimate the fatigue limit of different fatigue life in the VHCF regime and the fatigue limit at 10(9) cycles evaluated based on FGA indicates an error of around 2% with respect to the fatigue limit measured by staircase method.
资助项目	National Natural Science Foundation of China[U1708252]
WOS研究方向	Engineering ; Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000504505600011
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/136523]
专题	金属研究所_中国科学院金属研究所
通讯作者	Luan, Yikun; Li, Dianzhong
作者单位	1.Pakistan Inst Engn & Appl Sci, Dept Met & Mat Engn, Islamabad, Pakistan 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yang, Chaoyun,Luan, Yikun,Li, Dianzhong,et al. Very high cycle fatigue behavior of bearing steel with rare earth addition[J]. INTERNATIONAL JOURNAL OF FATIGUE,2020,131:13.
APA	Yang, Chaoyun,Luan, Yikun,Li, Dianzhong,Li, Yiyi,&Tariq, Naeem ul Haq.(2020).Very high cycle fatigue behavior of bearing steel with rare earth addition.INTERNATIONAL JOURNAL OF FATIGUE,131,13.
MLA	Yang, Chaoyun,et al."Very high cycle fatigue behavior of bearing steel with rare earth addition".INTERNATIONAL JOURNAL OF FATIGUE 131(2020):13.