In situ investigation of the fracture of primary carbides and its mechanism in M50 steel

doi:10.1016/j.matchar.2022.111822

IMR OpenIR

	In situ investigation of the fracture of primary carbides and its mechanism in M50 steel
	Du, Ningyu 1,2; Liu, Hanghang 1; Cao, Yanfei 1; Fu, Paixian 1; Sun, Chen 1; Liu, Hongwei 1; Li, Dianzhong 1
通讯作者	Liu, Hongwei(hwliu@imr.ac.cn) ; Li, Dianzhong(dzli@imr.ac.cn)
	2022-04-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	186 页码:11
摘要	The tensile crack initiation and propagation of M50 bearing steel were investigated. It is found that the primary carbides were fractured during the tensile test by in situ SEM, while decohesion of the carbide/matrix interface was hardly observed. In order to capture the initial tensile crack, quasi-in situ X-ray microtomography was performed, indicating that the earliest crack was formed from the broken interior carbides. This indicates that multiple cracks already existed in the matrix when they were observed on the sample surface. Electron backscattered diffraction (EBSD) and the finite element method (FEM) were applied to analyze the fracture behavior of carbide particles. The fracture of carbide particle is produced by the incompatible deformation between the matrix and carbides. The frequency of carbide fracture was found to be related with its fracture strength, size and shape. M2C carbide fracture was more easily broken than the MC carbide during tensile test. In addition, the long axis of most M2C carbides is approximately parallel to its (0001) plane and normal to tensile stress, leading to cracking more easily. Finally, a suggestion of adding pre-deformation is proposed to make M2C carbides broken sufficiently and further refine the primary carbides.
关键词	Bearing steel Primary carbides Fracture X-ray microtomography MC
资助者	Key-Area Research and Develop-ment Program of Guangdong Province, China ; Natural Science Foundation of China ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Science and Technology Major Project ; IMR Innovation Fund
DOI	10.1016/j.matchar.2022.111822
收录类别	SCI
语种	英语
资助项目	Key-Area Research and Develop-ment Program of Guangdong Province, China[2020B010184001] ; Natural Science Foundation of China[52031013] ; National Key Research and Development Program[2018YFA0702901] ; National Natural Science Foundation of China[51701225] ; National Science and Technology Major Project[2017-VII-0008-0101] ; National Science and Technology Major Project[TC190A4DA/35] ; IMR Innovation Fund[2022-PY09]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:000809940400003
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：32[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/321006/174781
专题	中国科学院金属研究所
通讯作者	Liu, Hongwei; Li, Dianzhong
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Du, Ningyu,Liu, Hanghang,Cao, Yanfei,et al. In situ investigation of the fracture of primary carbides and its mechanism in M50 steel[J]. MATERIALS CHARACTERIZATION,2022,186:11.
APA	Du, Ningyu.,Liu, Hanghang.,Cao, Yanfei.,Fu, Paixian.,Sun, Chen.,...&Li, Dianzhong.(2022).In situ investigation of the fracture of primary carbides and its mechanism in M50 steel.MATERIALS CHARACTERIZATION,186,11.
MLA	Du, Ningyu,et al."In situ investigation of the fracture of primary carbides and its mechanism in M50 steel".MATERIALS CHARACTERIZATION 186(2022):11.