Characteristics and transformation of primary carbides during austenitization in Cr4Mo4V bearing steel

doi:10.1016/j.matchar.2020.110636

IMR OpenIR

	Characteristics and transformation of primary carbides during austenitization in Cr4Mo4V bearing steel
	Liu, Weifeng 1,2,3; Cao, Yanfei 3; Guo, Yifeng 4; Xu, Bin 1,3; Sun, Mingyue 1,3; Li, Dianzhong 3
通讯作者	Sun, Mingyue(mysun@imr.ac.cn)
	2020-11-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	169 页码:11
摘要	The characteristics and transformation of M2C and MC, the most common primary carbides in Cr4Mo4V bearing steel, have been investigated via scanning electron microscopy, energy dispersive spectrometry and X-ray dif-fraction at high austenitization temperatures. It was first found that the transformation of rod-like M2C and spherical MC primary carbides during heating occurs at approximately 1180 and 1200 degrees C, respectively. In the transformation process of M2C, the periphery first transforms into an MC-type carbide, and then the internal untransformed M2C and newly-formed MC-type melt, and re-solidify in a M2C" eutectic carbide structure with a composition change and a finer lamellar spacing. In contrast, MC carbides melt directly with the re-solidified product also being constituted of finer M2C" eutectic carbides. The transformation process is controlled by the diffusion of alloying elements Mo and V, while the matrix provides Fe for the formation of M2C". In addition to elucidate the transformation mechanisms, this study also highlights the essential effect of the melting matrix on the modification of primary M2C and MC carbides in Cr4Mo4V steel.
关键词	Cr4Mo4V steel Primary carbide Melting Re-solidification Microstructure evolution Transformation mechanism
资助者	National Key Research and Development Program ; National Natural Science Foundation of China ; National Science and Technology Major Project of China ; Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association, CAS
DOI	10.1016/j.matchar.2020.110636
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program[2018YFA0702900] ; National Natural Science Foundation of China[51774265] ; National Natural Science Foundation of China[51701225] ; National Science and Technology Major Project of China[2019ZX06004010] ; Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association, CAS
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:000585225500002
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：28[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/321006/141307
专题	中国科学院金属研究所
通讯作者	Sun, Mingyue
作者单位	1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Coll Mat Sci & Engn, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 4.Shanghai Univ, State Key Lab Adv Special Steels, Shanghai 200072, Peoples R China
推荐引用方式 GB/T 7714	Liu, Weifeng,Cao, Yanfei,Guo, Yifeng,et al. Characteristics and transformation of primary carbides during austenitization in Cr4Mo4V bearing steel[J]. MATERIALS CHARACTERIZATION,2020,169:11.
APA	Liu, Weifeng,Cao, Yanfei,Guo, Yifeng,Xu, Bin,Sun, Mingyue,&Li, Dianzhong.(2020).Characteristics and transformation of primary carbides during austenitization in Cr4Mo4V bearing steel.MATERIALS CHARACTERIZATION,169,11.
MLA	Liu, Weifeng,et al."Characteristics and transformation of primary carbides during austenitization in Cr4Mo4V bearing steel".MATERIALS CHARACTERIZATION 169(2020):11.