Formation mechanism and microstructure evolution of light etched region during rolling contact fatigue in M50 steel

doi:10.1016/j.jmrt.2023.05.139

IMR OpenIR

	Formation mechanism and microstructure evolution of light etched region during rolling contact fatigue in M50 steel
	Lu, Xingyu 1; Zhou, Lina 3; Lei, Chengshuai 2; Liu, Hongwei 2; Lan, Huifang 1
通讯作者	Lei, Chengshuai(cslei@imr.ac.cn) ; Liu, Hongwei(hwliu@imr.ac.cn) ; Lan, Huifang(lanhf@mail.neu.edu.cn)
	2023-05-01
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	24 页码:8955-8966
摘要	The microstructure evolution and formation mechanism of lighting etched region (LER) during rolling contact fatigue (RCF) in M50 steel are systematically investigated. The results indicates that LER is a kind of microstructure degeneration due to the accumulation of plastic strain. Finite element simulation indicates that, under 5 GPa contact pressure, the equivalent stress at the subsurface exceeds the yield strength of M50 steel and, thus, in-duces plastic deformation. The dislocation density and fraction of grain boundaries in-crease in LER and thus the grain size is refined and the micro-hardness increases. The microstructure evolution in LER during RCF is divided into four stages. Stage 1: dislocations and GBs increase significantly, while the micro-hardness remains almost unchanged with the increase of RCF cycles; Stage 2: GBs and micro-hardness increase gradually with the increase of RCF cycles; Stage 3: LAGBs evolve to HAGBs and thus the total length of LAGBs decreases and the total length of HAGBs increases. Dislocation density and micro-hardness both increase with the increase of RCF cycles; Stage 4: dislocations and GBs continue to increase with the increase of RCF cycles due to accumulation of plastic deformation, and the micro-hardness also increases.& COPY; 2023 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	M50 steel Rolling contact fatigue Light etching Microstructure evolution Finite element simulation
资助者	Special Fund Project for Self-innovation of Aero Engine Corporation of China ; National Key Research and Development Program ; Natural Science Foundation of China
DOI	10.1016/j.jmrt.2023.05.139
收录类别	SCI
语种	英语
资助项目	Special Fund Project for Self-innovation of Aero Engine Corporation of China[ZZCX-2020- 027] ; National Key Research and Development Program[2018YFA0702900] ; Natural Science Foundation of China[52031013]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001019308600001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/178448
专题	中国科学院金属研究所
通讯作者	Lei, Chengshuai; Liu, Hongwei; Lan, Huifang
作者单位	1.Northeastern Univ, State Key Lab Rolling & Automation, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.AECC Harbin Bearing Co Ltd, Harbin 150025, Peoples R China
推荐引用方式 GB/T 7714	Lu, Xingyu,Zhou, Lina,Lei, Chengshuai,et al. Formation mechanism and microstructure evolution of light etched region during rolling contact fatigue in M50 steel[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2023,24:8955-8966.
APA	Lu, Xingyu,Zhou, Lina,Lei, Chengshuai,Liu, Hongwei,&Lan, Huifang.(2023).Formation mechanism and microstructure evolution of light etched region during rolling contact fatigue in M50 steel.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,24,8955-8966.
MLA	Lu, Xingyu,et al."Formation mechanism and microstructure evolution of light etched region during rolling contact fatigue in M50 steel".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 24(2023):8955-8966.