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Solidification behavior and segregation characteristics of high W-content cast Ni-Based superalloy K416B
Li, Qi1,2; Xie, Jun1; Yu, JinJiang1; Shu, Delong1; Hou, Guichen1; Sun, Xiaofeng1; Zhou, Yizhou1
Corresponding AuthorXie, Jun(junxie@imr.ac.cn) ; Yu, JinJiang(jjyu@imr.ac.cn)
2021-02-15
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume854Pages:10
AbstractThe solidification behavior of high W-content cast Ni-Based superalloy K416B has been investigated by DTA measurement, isothermal solidification experiment, and Thermo-calc simulation. The element segregation characteristic during solidification was also analyzed by EPMA. The results show that the solidification path of K416B can be summarized as follows: L -> L + gamma (1371 degrees C); L -> L + gamma + M6C (1370 degrees C); L -> L + gamma +MC (1332 degrees C); L -> L + eutectic (gamma + gamma') (1286 degrees C); L -> MC (High Hf) (1147 degrees C). During the crystallize of primary gamma dendrite, W and Co were enriched in the solid phase, while Cr, Al, Ti, Nb and Hf were enriched in the residual liquid. The positive segregation elements piled up at the remaining liquid promoted the formation of MC carbides and eutectic (gamma + gamma'). MC carbides precipitated at the interdendritic region and broke the residual liquid network, eutectic (gamma + gamma') seemed instability and easily translated into eutectic gamma' by the remelting of gamma phase and the coarsening of gamma' phase during subsequent cooling. The solidification terminated by the formation of MC (High Hf) phase. (C) 2020 Elsevier B.V. All rights reserved.
KeywordHigh-W Superalloy K416B Solidification Segregation Thermo-calc
Funding OrganizationNational Natural Science Foundation of China ; State Key Laboratory of Solidification Processing in NWPU ; Liaoning Provincial Natural Science Foundation of China
DOI10.1016/j.jallcom.2020.156027
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51701212] ; National Natural Science Foundation of China[51971214] ; National Natural Science Foundation of China[51771191] ; State Key Laboratory of Solidification Processing in NWPU[SKLSP201747] ; Liaoning Provincial Natural Science Foundation of China[2019-MS-336]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000596076300008
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/158726
Collection中国科学院金属研究所
Corresponding AuthorXie, Jun; Yu, JinJiang
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China
Recommended Citation
GB/T 7714
Li, Qi,Xie, Jun,Yu, JinJiang,et al. Solidification behavior and segregation characteristics of high W-content cast Ni-Based superalloy K416B[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,854:10.
APA Li, Qi.,Xie, Jun.,Yu, JinJiang.,Shu, Delong.,Hou, Guichen.,...&Zhou, Yizhou.(2021).Solidification behavior and segregation characteristics of high W-content cast Ni-Based superalloy K416B.JOURNAL OF ALLOYS AND COMPOUNDS,854,10.
MLA Li, Qi,et al."Solidification behavior and segregation characteristics of high W-content cast Ni-Based superalloy K416B".JOURNAL OF ALLOYS AND COMPOUNDS 854(2021):10.
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