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

文献类型：期刊论文

作者Lu, Xingyu3; Zhou, Lina2; Lei, Chengshuai1; Liu, Hongwei1; Lan, Huifang3
刊名JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
出版日期2023-05-01
卷号24页码:8955-8966
关键词M50 steel Rolling contact fatigue Light etching Microstructure evolution Finite element simulation
ISSN号2238-7854
DOI10.1016/j.jmrt.2023.05.139
通讯作者Lei, Chengshuai(cslei@imr.ac.cn) ; Liu, Hongwei(hwliu@imr.ac.cn) ; Lan, Huifang(lanhf@mail.neu.edu.cn)
英文摘要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/).
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
语种英语
WOS记录号WOS:001019308600001
出版者ELSEVIER
资助机构Special Fund Project for Self-innovation of Aero Engine Corporation of China ; National Key Research and Development Program ; Natural Science Foundation of China
源URL[http://ir.imr.ac.cn/handle/321006/178447]  
专题金属研究所_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.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.AECC Harbin Bearing Co Ltd, Harbin 150025, Peoples R China
3.Northeastern Univ, State Key Lab Rolling & Automation, Shenyang 110819, 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.

入库方式： OAI收割

来源：金属研究所

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