Dendritic branching patterns in platforms of complex Ni-based single crystal castings

doi:10.1007/s41230-019-8080-3

IMR OpenIR

	Dendritic branching patterns in platforms of complex Ni-based single crystal castings
	Huang, Min 1,2; Zhang, Gong 1; Wang, Dong 1; Ge, Zhi-cheng 1; Lu, Yu-zhang 1; Jiang, Xiang-wei 1; Lou, Lang-hong 1
通讯作者	Zhang, Gong(gzhang@imr.ac.cn)
	2019-03-01
发表期刊	CHINA FOUNDRY
ISSN	1672-6421
卷号	16 期号:2 页码:110-117
摘要	Dendritic branching patterns at variable cross-sections in Ni-based single crystal (SX) castings of different generations were investigated using optical microscope (OM), electro probe microanalyzer (EPMA), differential scanning calorimeter (DSC), Thermo-Cal software and Pro-CAST software. Results show that the dendritic branching patterns are similar in outward platform in SXs of different generations. That is, the primary dendrites (PDs) are introduced into the platform by developing a series of secondary dendrites (SDs) to occupy the bottom of the platform, and the ternary dendrites (TDs) originating from these SDs grow upward to fill up the platform. With the SX generation increasing, the undercooling of melts in the inward platform increases significantly due to the increasing alloying elements and the segregation in the directional solidification (DS) process, and the growth velocity of the dendrite tip increases according to the dynamic model of dendrite growth, which is beneficial for the high-order dendrite development. The stronger dendritic branching ability is shown in the inward platform of the higher generation Ni-based SX.
关键词	dendritic branching patterns platform undercooling
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China
DOI	10.1007/s41230-019-8080-3
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFB0702904] ; National Natural Science Foundation of China[51631008]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000463578500005
出版者	SPRINGER SINGAPORE PTE LTD
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/132819
专题	中国科学院金属研究所
通讯作者	Zhang, Gong
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Huang, Min,Zhang, Gong,Wang, Dong,et al. Dendritic branching patterns in platforms of complex Ni-based single crystal castings[J]. CHINA FOUNDRY,2019,16(2):110-117.
APA	Huang, Min.,Zhang, Gong.,Wang, Dong.,Ge, Zhi-cheng.,Lu, Yu-zhang.,...&Lou, Lang-hong.(2019).Dendritic branching patterns in platforms of complex Ni-based single crystal castings.CHINA FOUNDRY,16(2),110-117.
MLA	Huang, Min,et al."Dendritic branching patterns in platforms of complex Ni-based single crystal castings".CHINA FOUNDRY 16.2(2019):110-117.