Modeling of Macrosegregation Formation and the Effect of Enhanced Cooling During Vacuum Arc Remelting Solidification of NbTi Alloy Ingot
文献类型：期刊论文
| 作者 | Guan, Jian1,2; Miao, Yangyang3,4; Chen, Zhenzhen3,4; Liu, Dong-Rong1; Cao, Yanfei3; Li, Dianzhong3 |
| 刊名 | METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
 |
| 出版日期 | 2022-10-12 |
| 页码 | 15 |
| ISSN号 | 1073-5615 |
| DOI | 10.1007/s11663-022-02664-6 |
| 通讯作者 | Cao, Yanfei(yfcao10s@imr.ac.cn) ; Li, Dianzhong() |
| 英文摘要 | 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 |
| 语种 | 英语 |
| WOS记录号 | WOS:000866315000004 |
| 出版者 | SPRINGER |
| 资助机构 | National Science and Technology Major Project ; National Natural Science Foundation ; National Key Research and Development Program |
| 源URL | [http://ir.imr.ac.cn/handle/321006/176381]  |
| 专题 | 金属研究所_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. |
入库方式： OAI收割
来源：金属研究所
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