Study on transverse-longitudinal fatigue properties and their effective-inclusion-size mechanism of hot rolled bearing steel with rare earth addition

doi:10.1016/j.ijfatigue.2019.105193

IMR OpenIR

	Study on transverse-longitudinal fatigue properties and their effective-inclusion-size mechanism of hot rolled bearing steel with rare earth addition
	Yang, Chaoyun 1,2; Liu, Peng 1,2; Luan, Yikun 1,2; Li, Dianzhong 1,2; Li, Yiyi 1,2
通讯作者	Luan, Yikun(ykluan@imr.ac.cn)
	2019-11-01
发表期刊	INTERNATIONAL JOURNAL OF FATIGUE
ISSN	0142-1123
卷号	128 页码:14
摘要	This study mainly aims to clarify the effect of rare earth (RE) addition on the fatigue properties of hot rolled high-carbon chromium bearing steel, especially crack initiation and propagation behavior induced by long strip type inclusions in the very high cycle fatigue (VHCF) regime. For this purpose, ultrasonic tension-compression fatigue tests were carried out on transverse and longitudinal specimens extracted from hot rolled bearing steels with and without RE addition. As a result, complex inclusions, usually containing inner oxide and peripheral oxide-sulfide duplex inclusion as well as (Ca, Mn)S inclusion, dominate the fatigue property of high clean bearing steel though MnS inclusions may lead to early fatigue failure of transverse specimens and contribute to fatigue anisotropy. RE addition can better improve longitudinal fatigue property of hot rolled bearing steel than transverse fatigue property by modifying common inclusions into complex RE inclusions, which deform easily during hot rolling to reduce the effective inclusion size (EIS) at fatigue source. In contrast with fatigue failure caused by inclusion particle indicating almost synchronous crack propagation in all directions from inclusion particle, the width of instant crack plays an dominating role in crack initiation and propagation process for fatigue failure induced by long strip type inclusion. Fine granular area (FGA) only exists on both sides of the wider part of inclusion strip, and the length-width ratio of instant crack may continuously decrease with crack propagation. Effective inclusion area and corresponding EIS can be determined from the perspective of crack initiation and propagation in the VHCF regime. For VHCF fracture surface with FGA, the effective inclusion area corresponds exactly to the inclusion area included in FGA.
关键词	Very high cycle fatigue Rare earth Inclusions Crack initiation and propagation Effective inclusion size
资助者	National Natural Science Foundation of China
DOI	10.1016/j.ijfatigue.2019.105193
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:000484647400012
出版者	ELSEVIER SCI LTD
引用统计	被引频次：48[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/321006/135294
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, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Yang, Chaoyun,Liu, Peng,Luan, Yikun,et al. Study on transverse-longitudinal fatigue properties and their effective-inclusion-size mechanism of hot rolled bearing steel with rare earth addition[J]. INTERNATIONAL JOURNAL OF FATIGUE,2019,128:14.
APA	Yang, Chaoyun,Liu, Peng,Luan, Yikun,Li, Dianzhong,&Li, Yiyi.(2019).Study on transverse-longitudinal fatigue properties and their effective-inclusion-size mechanism of hot rolled bearing steel with rare earth addition.INTERNATIONAL JOURNAL OF FATIGUE,128,14.
MLA	Yang, Chaoyun,et al."Study on transverse-longitudinal fatigue properties and their effective-inclusion-size mechanism of hot rolled bearing steel with rare earth addition".INTERNATIONAL JOURNAL OF FATIGUE 128(2019):14.