Formation and Evolution Mechanism of Voids in M50 Bearing Steel During Thermal Deformation

doi:10.11900/0412.1961.2022.00236

IMR OpenIR

	Formation and Evolution Mechanism of Voids in M50 Bearing Steel During Thermal Deformation
	Hou Zhiyuan 1,2,3; Liu Weifeng 1,3; Xu Bin 1,3; Sun Mingyue 1,3; Shi Jing 2; Ren Shaofei 1,3
通讯作者	Xu Bin(bxu@imr.ac.cn) ; Sun Mingyue(mysun@imr.ac.cn)
	2024-01-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	60 期号:1 页码:57-68
摘要	M50 bearing steel is widely used in the manufacture of aeroengine spindle bearings. The voids generated by the thermal processing of bearing steel can easily initiate fatigue cracks and lead to fatigue failure of the bearings. Thus, it is essential to understand the steel production conditions, void distribution in the steel, and effect of the subsequent treatment on the healing process of voids to improve the thermal processing and mechanical properties of the steel. In this work, the thermal deformation of the M50 bearing steel was conducted using a thermal simulation machine. The effects of the strain rate (0.001-1 s(-1)), deformation temperature (1000-1150 degrees C) and strain (10%-50%) on the formation of voids and void healing during the subsequent thermal treatment were systematically studied using OM, SEM, EBSD, and in situ scanning methods. The results show that the formation of voids between the carbide and matrix is attributed to the different hardness values between the matrix and primary M(2)aC and MC carbides. In addition, the carbide fractures can promote the formation of internal voids. The quantitative analysis of the voids indicated that most voids are generated under the following conditions: a high strain rate of 1 s(-1), low deformation temperature of 1000 degrees C, and medium deformation of 30%. Applying a heat treatment after deformation can significantly promote the void healing process, and the Cr element is enriched in the healing zone due to its rapid diffusion in gamma- Fe.
关键词	M50 bearing steel primary carbide void hot compression healing
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Science and Technology Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Lingchuang Research Project of China National Nuclear Corporation ; Youth Innovation Promotion Association, Chinese Academy of Sciences
DOI	10.11900/0412.1961.2022.00236
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2018YFA0702900] ; National Natural Science Foundation of China[51774265] ; National Natural Science Foundation of China[51701225] ; National Natural Science Foundation of China[52173305] ; National Science and Technology Major Project of China[2019ZX06004010] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC04000000] ; Lingchuang Research Project of China National Nuclear Corporation ; Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001153598100005
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/184677
专题	中国科学院金属研究所
通讯作者	Xu Bin; Sun Mingyue
作者单位	1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety, Shenyang 110016, Peoples R China 2.Ocean Univ China, Sch Mat Sci & Engn, Qingdao 266003, Peoples R China 3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Hou Zhiyuan,Liu Weifeng,Xu Bin,et al. Formation and Evolution Mechanism of Voids in M50 Bearing Steel During Thermal Deformation[J]. ACTA METALLURGICA SINICA,2024,60(1):57-68.
APA	Hou Zhiyuan,Liu Weifeng,Xu Bin,Sun Mingyue,Shi Jing,&Ren Shaofei.(2024).Formation and Evolution Mechanism of Voids in M50 Bearing Steel During Thermal Deformation.ACTA METALLURGICA SINICA,60(1),57-68.
MLA	Hou Zhiyuan,et al."Formation and Evolution Mechanism of Voids in M50 Bearing Steel During Thermal Deformation".ACTA METALLURGICA SINICA 60.1(2024):57-68.