Microstructure characteristics and formation mechanisms of white etching layer (WEL) and brown etching layer (BEL) on martensite bearing raceway

doi:10.1016/j.jmrt.2023.06.217

IMR OpenIR

	Microstructure characteristics and formation mechanisms of white etching layer (WEL) and brown etching layer (BEL) on martensite bearing raceway
	Zhang, Xiaochen 1,2; Wu, Di 1,3; Xia, Zhuofan 1,2; Zhang, Yaming 2; Li, Yifeng 5; Wang, Jianqiu 1,2,4; Han, En-Hou 1,2,4
通讯作者	Wu, Di(dwu@imr.ac.cn) ; Wang, Jianqiu(wangjianqiu@imr.ac.cn)
	2023-07-01
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	25 页码:4876-4887
摘要	White Etching Layer (WEL) and Brown Etching Layer (BEL) always form on the surface of rails and bearings subjected to rolling cyclic contact stress. Because of the different properties between WEL/BEL and matrix, the cracks initiate and propagate easily, leading to failure ultimately. The WEL and BEL found on pearlite rail, have been widely investigated, but WEL and BEL on bainite rail and martensite bearing have not been further studied. Especially the BEL on martensite bearing raceways has rarely been reported. This study investigates the features of WEL and BEL found on martensite bearing raceway. The BEL locates in the middle of WEL and matrix, but its hardness values are the highest, which is different from the general results reported: WEL > BEL > matrix. The WEL is mainly consisted of austenite with coarse grains, ferrite and retained tempered martensite. The mainly composition of BEL is quenched martensite. Thermal effect is the main formation mechanism of the WEL and BEL in this study. BEL forms because the surface temperature exceeds Acm point, and then rapidly decreases. The formation of WEL may originate from two processes: (1) The austenitizing and slowly cooling process again of BEL; (2) The austenitizing and slowly cooling process of the matrix. WEL and BEL forming processes are closely related to the diffusion and redistribution of carbon. The contributory heat conduction and diffusion mechanism in the confined spaces of grease lubricated bearings have been also discussed in this study.(c) 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
关键词	Thermal diffusion White etching layer (WEL) Brown etching layer (BEL) Martensite Bearing raceway
资助者	Strategic Priority Research Program of the Chinese Academy of Sciences, China
DOI	10.1016/j.jmrt.2023.06.217
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences, China[XDC04030400]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001094816000001
出版者	ELSEVIER
引用统计	被引频次：1[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/321006/177502
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, CAS Key Lab Nucl Mat & Safety Assessment, Inst Met Res, 62 Wencui Rd, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 4.Inst Corros Sci & Technol, 136 Kaiyuan Ave, Guangzhou 510530, Peoples R China 5.Shanghai Univ, Inst Mat, 99 Shangda Rd, Shanghai 200072, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xiaochen,Wu, Di,Xia, Zhuofan,et al. Microstructure characteristics and formation mechanisms of white etching layer (WEL) and brown etching layer (BEL) on martensite bearing raceway[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2023,25:4876-4887.
APA	Zhang, Xiaochen.,Wu, Di.,Xia, Zhuofan.,Zhang, Yaming.,Li, Yifeng.,...&Han, En-Hou.(2023).Microstructure characteristics and formation mechanisms of white etching layer (WEL) and brown etching layer (BEL) on martensite bearing raceway.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,25,4876-4887.
MLA	Zhang, Xiaochen,et al."Microstructure characteristics and formation mechanisms of white etching layer (WEL) and brown etching layer (BEL) on martensite bearing raceway".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 25(2023):4876-4887.