Solidification behavior and segregation characteristics of high W-content cast Ni-Based superalloy K416B

doi:10.1016/j.jallcom.2020.156027

CORC > 金属研究所 > 中国科学院金属研究所

	Solidification behavior and segregation characteristics of high W-content cast Ni-Based superalloy K416B
	Li, Qi 1,2; Xie, Jun 1; Yu, JinJiang 1; Shu, Delong 1; Hou, Guichen 1; Sun, Xiaofeng 1; Zhou, Yizhou 1
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2021-02-15
卷号	854 页码:10
关键词	High-W Superalloy K416B Solidification Segregation Thermo-calc
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2020.156027
通讯作者	Xie, Jun(junxie@imr.ac.cn) ; Yu, JinJiang(jjyu@imr.ac.cn)
英文摘要	The 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.
资助项目	National 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研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000596076300008
资助机构	National Natural Science Foundation of China ; State Key Laboratory of Solidification Processing in NWPU ; Liaoning Provincial Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/158725]
专题	金属研究所_中国科学院金属研究所
通讯作者	Xie, Jun; Yu, JinJiang
作者单位	1.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
推荐引用方式 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.