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Effects of solution annealing on the precipitation of dendrite-like carbides during continuous cooling in Alloy 690
Zhao, Xia1,2,3; Wang, Min1,3; Hao, Xian-Chao1,3; Liu, Hong-Yi4; Zha, Xiang-Dong1,3; Gao, Ming1,3; Ma, Ying-Che1,3; Liu, Kui1,3
Corresponding AuthorWang, Min(minwang@imr.ac.cn) ; Liu, Kui(kliu@imr.ac.cn)
2021-11-01
Source PublicationJOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN2238-7854
Volume15Pages:3296-3309
AbstractThe precipitation characteristics of intergranular carbides generally have a significant impact on the microstructural homogeneity and properties of Alloy 690. M23C6 carbides with distinct dendritic morphology are found precipitating in the continuously cooled Alloy 690, and this study focuses on the effects of solution heat treatment on the morphology evolution of M(23)C(6)carbides during cooling. Results show that if the solution heat treatment is sufficient enough, carbides tend to precipitate in a dendritic morphology during cooling, otherwise rod-like carbides would be dominant on the grain boundary. The precipitation morphology of carbides basically depends on the critical nucleation radius R* and the relative supersaturation S which is closely related to the solute concentration on the grain boundary. Insufficient solution annealing will leave undissolved original carbides on the grain boundary, which can grow prior to the precipitation of new carbides and consume lots of solute elements in advance. This earlier solute consumption and the consequent element diffusion could prevent the formation of dendritic carbides, and then rod-like carbides form instead. This study will help to regulate the precipitation morphology of grain boundary carbides in Alloy 690 during continuous cooling, so as to obtain a microstructure conducive to properties. (C) 2021 The Author(s). Published by Elsevier B.V.
KeywordHeat treatment Precipitation M23C6 Alloy 690 Continuous cooling
Funding OrganizationNational Natural Science Foundation of China
DOI10.1016/j.jmrt.2021.09.150
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51801211]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000707717900009
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/167074
Collection中国科学院金属研究所
Corresponding AuthorWang, Min; Liu, Kui
Affiliation1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
4.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Xia,Wang, Min,Hao, Xian-Chao,et al. Effects of solution annealing on the precipitation of dendrite-like carbides during continuous cooling in Alloy 690[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2021,15:3296-3309.
APA Zhao, Xia.,Wang, Min.,Hao, Xian-Chao.,Liu, Hong-Yi.,Zha, Xiang-Dong.,...&Liu, Kui.(2021).Effects of solution annealing on the precipitation of dendrite-like carbides during continuous cooling in Alloy 690.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,15,3296-3309.
MLA Zhao, Xia,et al."Effects of solution annealing on the precipitation of dendrite-like carbides during continuous cooling in Alloy 690".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 15(2021):3296-3309.
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