Modeling of Macrosegregation Formation and the Effect of Enhanced Cooling During Vacuum Arc Remelting Solidification of NbTi Alloy Ingot

doi:10.1007/s11663-022-02664-6

IMR OpenIR

	Modeling of Macrosegregation Formation and the Effect of Enhanced Cooling During Vacuum Arc Remelting Solidification of NbTi Alloy Ingot
	Guan, Jian 1,2; Miao, Yangyang 3,4; Chen, Zhenzhen 3,4; Liu, Dong-Rong 1; Cao, Yanfei 3; Li, Dianzhong 3
通讯作者	Cao, Yanfei(yfcao10s@imr.ac.cn) ; Li, Dianzhong()
	2022-10-12
发表期刊	METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
ISSN	1073-5615
页码	15
摘要	Modeling vacuum arc remelting (VAR) is very challenging as this process involves a wide range of physical phenomena and complex interactions. The formations of macrosegregation and channel segregation during VAR are essential issues and require deep investigations. A two-dimensional transient model is developed to study the macrosegregation of NbTi alloy and predict the occurring tendency of channel segregation by dimensionless Rayleigh number. The most important feature is a full consideration of electromagnetic interaction, multi-force driven convection, heat as well as solute transfers, and time-variant characteristic values of microstructure. The simulation results reveal that the Lorentz force induced by the electromagnetic interaction mainly controls the macrosegregation distribution in the ingot. The effects of enhancing cooling on macrosegregation are studied by filling helium into an air gap formed between the inner wall of the crucible and the outer wall of the ingot. As the cooling efficiency is increased with filling pressure, there exists an optimized filling pressure to avoid the formation of a positive segregation in the central region. The homogenization of the ingot is improved. The simulated macrosegregation and channel segregation show fairly good qualitative agreement with the experimental results. This study elucidates the mechanism of enhanced cooling reducing channel segregation and highlights an economic and controllable method to produce homogenized ingots during VAR.
资助者	National Science and Technology Major Project ; National Natural Science Foundation ; National Key Research and Development Program
DOI	10.1007/s11663-022-02664-6
收录类别	SCI
语种	英语
资助项目	National Science and Technology Major Project[2017-VII-0008-0101] ; National Natural Science Foundation[52031013] ; National Natural Science Foundation[U1708252] ; National Key Research and Development Program[2018YFA0702900] ; National Key Research and Development Program[TC190A4DA/35]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000866315000004
出版者	SPRINGER
引用统计	被引频次：14[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/321006/176382
专题	中国科学院金属研究所
通讯作者	Cao, Yanfei; Li, Dianzhong
作者单位	1.Harbin Univ Sci & Technol, Sch Mat Sci & Chem Engn, 4 Linyuan Rd, Harbin 150040, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Beijing, Peoples R China 4.Univ Sci & Technol China, Sch Mat Sci & Engn, 96 Jinzhai Rd, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Guan, Jian,Miao, Yangyang,Chen, Zhenzhen,et al. Modeling of Macrosegregation Formation and the Effect of Enhanced Cooling During Vacuum Arc Remelting Solidification of NbTi Alloy Ingot[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2022:15.
APA	Guan, Jian,Miao, Yangyang,Chen, Zhenzhen,Liu, Dong-Rong,Cao, Yanfei,&Li, Dianzhong.(2022).Modeling of Macrosegregation Formation and the Effect of Enhanced Cooling During Vacuum Arc Remelting Solidification of NbTi Alloy Ingot.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,15.
MLA	Guan, Jian,et al."Modeling of Macrosegregation Formation and the Effect of Enhanced Cooling During Vacuum Arc Remelting Solidification of NbTi Alloy Ingot".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE (2022):15.