Formation Mechanisms and Crack Propagation Behaviors of White Etching Layers and Brown Etching Layers on Raceways of Failure Bearings

doi:10.3390/lubricants12020059

IMR OpenIR

	Formation Mechanisms and Crack Propagation Behaviors of White Etching Layers and Brown Etching Layers on Raceways of Failure Bearings
	Zhang, Xiaochen 1,2; Wu, Di 1,3; Zhang, Yaming 2; Xu, Lijia 4; Wang, Jianqiu 1,2,5; Han, En-Hou 1,2,5
通讯作者	Wu, Di(dwu@imr.ac.cn) ; Wang, Jianqiu(wangjianqiu@imr.ac.cn)
	2024-02-01
发表期刊	LUBRICANTS
卷号	12 期号:2 页码:15
摘要	White etching layers (WELs) and brown etching layers (BELs), formed on the upper layer of bearing raceways generally lead to surface crack initiation and propagation and significantly affect the stable operation of precision bearings. In this study, the microstructure features of WELs and BELs from two failure bearings have been characterized and analyzed. The BEL mainly consists of quenched martensite with higher hardness values. The bainite simultaneously exists at the boundary of the BEL/matrix. Owing to the relative roll and slip, temperature increases and rapid decreases are the main formation mechanisms of the BEL in this study (thermal-induced effect). The WEL can be only found on one sample, and elongated and coarse grains are found in this region. It can be speculated that the WEL may originate from the surface region temperature increasing again and then slowly decreasing. Cracks can initiate at the boundaries of the WEL/BEL/matrix. The crack propagation behaviors are significantly affected by the properties of the WEL and BEL microstructure. It is difficult for the cracks to propagate from a softer WEL into a harder BEL. Thus, the depth of cracks in the WEL is shallower. However, because of the brittle nature of quenched martensite in the BEL, cracks can easily propagate downward under contact stress. Thus, the depth of cracks can exceed 100 mu m easily. The formation mechanisms of the WEL/BEL and crack propagation behaviors have been further proved and discussed in this study.
关键词	white etching layer (WEL) brown etching layer (BEL) thermal-induced effect crack propagation behavior martensite-bearing raceways
资助者	Strategic Priority Research Program of the Chinese Academy of Sciences, China
DOI	10.3390/lubricants12020059
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences, China
WOS研究方向	Engineering
WOS类目	Engineering, Mechanical
WOS记录号	WOS:001168253200001
出版者	MDPI
引用统计	被引频次：3[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/321006/184554
专题	中国科学院金属研究所
通讯作者	Wu, Di; Wang, Jianqiu
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, 62 Wencui Rd, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China 4.Angang Steel Co Ltd, Mfg Dept Bayuquan Iron & Steel Subsidiary, Yingkou 115007, Peoples R China 5.Inst Corros Sci & Technol, 136 Kaiyuan Ave, Guangzhou 510530, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xiaochen,Wu, Di,Zhang, Yaming,et al. Formation Mechanisms and Crack Propagation Behaviors of White Etching Layers and Brown Etching Layers on Raceways of Failure Bearings[J]. LUBRICANTS,2024,12(2):15.
APA	Zhang, Xiaochen,Wu, Di,Zhang, Yaming,Xu, Lijia,Wang, Jianqiu,&Han, En-Hou.(2024).Formation Mechanisms and Crack Propagation Behaviors of White Etching Layers and Brown Etching Layers on Raceways of Failure Bearings.LUBRICANTS,12(2),15.
MLA	Zhang, Xiaochen,et al."Formation Mechanisms and Crack Propagation Behaviors of White Etching Layers and Brown Etching Layers on Raceways of Failure Bearings".LUBRICANTS 12.2(2024):15.