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Transformation behavior of primary MC and M2C carbides in Cr4Mo4V steel
Liu, Weifeng1,2,3; Guo, Yifeng4; Cao, Yanfei3; Wang, Jianqiang1,2,3; Hou, Zhiyuan5; Sun, Mingyue1,3; Xu, Bin1,3; Li, Dianzhong3
Corresponding AuthorSun, Mingyue(mysun@imr.ac.cn) ; Li, Dianzhong(dzli@imr.ac.cn)
2021-12-31
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume889Pages:10
AbstractThe transformation of primary MC and M2C carbides, during high-temperature treatment, was investigated by quasi in-situ observation of Cr4Mo4V steel. It was found that the V-rich rod-like MC carbides have great thermal stability, and disintegrating and coarsening are their dominant transformation mechanisms. The M2C carbides mainly possess rod-like (M2C-R) and lamellar (M2C-L) morphologies. The M2C-R carbides are Mo-enriched, and their transformation follows the paths: the separate precipitation of MC and M2C-R + gamma -> MC + M6C. The V-and Fe-rich MC carbides nucleates randomly in the interior of M2C-R before the nucleation of Mo-and Fe-rich M6C carbides, which is controlled by the diffusion of V. Soaking for longer durations can cause spheroidization and coarsening of the MC carbides, along with the dissolution of M6C carbides. The evolution of Fe-and Mo-rich M2C-L carbides consists of two stages: the partial dissolution of M2C-L into the matrix and the transformation of M2C-L -> MC + gamma . These novel findings contribute towards the understanding of how primary carbides evolve during heat treatment and provide a potential method for carbides refinement in Cr4Mo4V steel. (C) 2021 Elsevier B.V. All rights reserved.
KeywordCr4Mo4V steel Primary carbides Soaking treatment Decomposition Refinement
Funding OrganizationNational Key Research and Development Program ; 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 Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association, CAS
DOI10.1016/j.jallcom.2021.161755
Indexed BySCI
Language英语
Funding ProjectNational 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] ; National Science and Technology Major Project of China[2017-VII-008-0101] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC04000000] ; LingChuang Research Project of China National Nuclear Corporation Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association, CAS
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000706715400005
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/166630
Collection中国科学院金属研究所
Corresponding AuthorSun, Mingyue; Li, Dianzhong
Affiliation1.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, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
4.Shanghai Univ, State Key Lab Adv Special Steel, 333 Nanchen Rd, Shanghai 200444, Peoples R China
5.Ocean Univ China, Sch Mat Sci & Engn, Qingdao 266100, Peoples R China
Recommended Citation
GB/T 7714
Liu, Weifeng,Guo, Yifeng,Cao, Yanfei,et al. Transformation behavior of primary MC and M2C carbides in Cr4Mo4V steel[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,889:10.
APA Liu, Weifeng.,Guo, Yifeng.,Cao, Yanfei.,Wang, Jianqiang.,Hou, Zhiyuan.,...&Li, Dianzhong.(2021).Transformation behavior of primary MC and M2C carbides in Cr4Mo4V steel.JOURNAL OF ALLOYS AND COMPOUNDS,889,10.
MLA Liu, Weifeng,et al."Transformation behavior of primary MC and M2C carbides in Cr4Mo4V steel".JOURNAL OF ALLOYS AND COMPOUNDS 889(2021):10.
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