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Numerical Investigation of Grain Structure Under the Rotating Arc Based on Cellular Automata-Finite Element Method During Vacuum Arc Remelting Process

文献类型：期刊论文

作者Cui, Jiajun1,2; Li, Baokuan3; Liu, Zhongqiu3; Xiong, Yongtao3; Qi, Fengsheng3; Zhao, Zibo4; Zhu, Shaoxiang4
刊名METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
出版日期2023-01-10
页码12
ISSN号1073-5615
DOI10.1007/s11663-022-02716-x
通讯作者Li, Baokuan(libk@smm.neu.edu.cn) ; Liu, Zhongqiu(liuzq@smm.neu.edu.cn)
英文摘要The assumption of transient rotating arc distribution is more closer to the actual vacuum arc remelting (VAR) process, but there is still a lack of relevant research on the grain structure under the rotating arc. Based on this, a three-dimensional transient full-size CAFE model coupled with heat transfer, fluid flow, solidification, and grain nucleation is developed to predict the grain structure, which is validated by comparing the predicted results with the experimental observation. The heating effect of the electric arc on the molten pool is innovatively considered by incorporating a volume heat source in the form of a dynamic thin layer moving upward with ingot growth. The effects of melting rate, gas cooling, and nucleation parameters on the grain structure are studied, respectively, by this model. The results show that the proportion of equiaxed grain increases from 30.9 to 43.1 pct with the melting rate increasing from 0.048 to 0.072 kg/s. As the equivalent heat transfer coefficient in the shrinkage gap increases from a small value of radiation to 400 W/(m(2) K), the proportion of equiaxed grain decreases from 37.2 to 18.0 pct. Increasing the melting rate can significantly refine the grains, while the effect caused by gas cooling is just the opposite. With the increase of the mean undercooling, the central equiaxed grain region is reduced and the mean surface area greatly increases, which is also contrary to the effect of the maximum volume nucleation density on the grain structure.
资助项目National Natural Science Foundation of China[51934002] ; National Science and Technology Major Project[J2019-VI-0005-0119] ; Youth Innovation Promotion Association CAS[2020193] ; 111 Project[B16009]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
出版者SPRINGER
WOS记录号WOS:000917851100001
资助机构National Natural Science Foundation of China ; National Science and Technology Major Project ; Youth Innovation Promotion Association CAS ; 111 Project
源URL[http://ir.imr.ac.cn/handle/321006/175335]  
专题金属研究所_中国科学院金属研究所
通讯作者Li, Baokuan; Liu, Zhongqiu
作者单位1.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
2.China Iron & Steel Res Inst Grp, High Temp Mat Div, Beijing 100081, Peoples R China
3.Northeastern Univ, Sch Met, Shenyang, Peoples R China
4.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Cui, Jiajun,Li, Baokuan,Liu, Zhongqiu,et al. Numerical Investigation of Grain Structure Under the Rotating Arc Based on Cellular Automata-Finite Element Method During Vacuum Arc Remelting Process[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2023:12.
APA Cui, Jiajun.,Li, Baokuan.,Liu, Zhongqiu.,Xiong, Yongtao.,Qi, Fengsheng.,...&Zhu, Shaoxiang.(2023).Numerical Investigation of Grain Structure Under the Rotating Arc Based on Cellular Automata-Finite Element Method During Vacuum Arc Remelting Process.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,12.
MLA Cui, Jiajun,et al."Numerical Investigation of Grain Structure Under the Rotating Arc Based on Cellular Automata-Finite Element Method During Vacuum Arc Remelting Process".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE (2023):12.

入库方式： OAI收割

来源：金属研究所

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