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Solidification Characteristics and Segregation Behavior of a Ni-Fe-Cr Based Alloy
Wang Changshuai1; Su Haijun2; Guo Yongan1; Guo Jianting1; Zhou Lanzhang1
Corresponding AuthorWang Changshuai(cswang@imr.ac.cn)
2018-12-01
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume47Issue:12Pages:3816-3823
AbstractThe solidification characteristics and segregation behavior of a Ni-Fe-Cr based alloy with planar interface and dendritic growth, which was obtained through quenching experiments during directional solidification, were investigated. Results show that the major precipitates are gamma, gamma' and MC. The phase transition route is determined as follows: L -> L+gamma -> L+gamma MC ->gamma+gamma'+MC. The solution distribution coefficients of Ti, Nb and Mo are less than unity. The solution distribution coefficients of Fe is greater than unity, and Al and Cr are close to 1. The solute boundary layer forms ahead of the liquid/solid interface when the steady-state growth begins. The solute is carried away mainly by diffusion in the solute boundary layer, but carried away mainly by flow out of the solute boundary layer. The solute distribution in solid phase with dendritic growth is similar to that with planar interface growth. However, the solute concentration in the quenched liquid in the interdendritic area is obviously higher than that ahead of the liquid/solid interface. The solidification segregation of the mushy zone is more serious than that of the solid region. It indicates that the back-diffusion in solid phase and the precipitation of MC carbide would reduce the solidification segregation during the dendritic growth.
KeywordNi-Fe-Cr based alloy solidification microstructure solidification path solution distribution coefficient dendritic segregation
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000455074500037
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/130940
Collection中国科学院金属研究所
Corresponding AuthorWang Changshuai
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110006, Liaoning, Peoples R China
2.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Wang Changshuai,Su Haijun,Guo Yongan,et al. Solidification Characteristics and Segregation Behavior of a Ni-Fe-Cr Based Alloy[J]. RARE METAL MATERIALS AND ENGINEERING,2018,47(12):3816-3823.
APA Wang Changshuai,Su Haijun,Guo Yongan,Guo Jianting,&Zhou Lanzhang.(2018).Solidification Characteristics and Segregation Behavior of a Ni-Fe-Cr Based Alloy.RARE METAL MATERIALS AND ENGINEERING,47(12),3816-3823.
MLA Wang Changshuai,et al."Solidification Characteristics and Segregation Behavior of a Ni-Fe-Cr Based Alloy".RARE METAL MATERIALS AND ENGINEERING 47.12(2018):3816-3823.
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