Numerical Investigation on the Evolution Behavior of Solidification Structure in Titanium Alloy During Vacuum Arc Remelting Process
文献类型：期刊论文
| 作者 | Xiong, Yongtao1,2; Liu, Zhongqiu1,2; Zhao, Zibo3; Li, Baokuan2 |
| 刊名 | METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
 |
| 出版日期 | 2024-10-08 |
| 页码 | 18 |
| ISSN号 | 1073-5615 |
| DOI | 10.1007/s11663-024-03316-7 |
| 通讯作者 | Liu, Zhongqiu(liuzq@smm.neu.edu.cn) |
| 英文摘要 | High-temperature titanium alloys, with the advantages such as low density, high specific strength, and excellent high-temperature creep resistance, are critical structural materials for achieving weight reduction and improving thrust-to-weight ratio in aerospace engines. The primary method for industrial production of titanium alloy ingots is Vacuum Arc Remelting (VAR) technology. However, large-sized titanium alloy VAR ingots are prone to metallurgical defects such as compositional segregation, uneven solidification structure, and inclusions, which are closely related to the evolution behavior of solidification structure during the remelting process. The evolution patterns and formation mechanisms of the solidification structure in titanium alloy are not yet clearly understood. The heat transfer phenomena and solidification structure distribution during the VAR process of large-sized titanium alloy ingots were investigated using the cellular automaton-finite element (CAF & Eacute;) model. The inherent mechanisms governing grain nucleation and dendritic growth processes were explored, and the influence of typical process parameters on the solidification structure was analyzed. The results indicate that the solidification structure near the surface of the ingot is primarily columnar in shape. As the temperature gradient decreases and the solidification rate increases, a transition from columnar to equiaxed grains occurs, with the corresponding range of temperature gradient between 2.2 and 2.6 K/mm, solidification rate ranging from 0.04 to 0.046 mm/s, and mapping factor ranging from 50 to 70. Increasing the current intensity primarily suppresses grain nucleation and promotes the growth of columnar grains by affecting the solidification rate and mapping factor near the sidewall of ingot. |
| 资助项目 | Excellent Youth Fund of Liaoning Natural Science Foundation[2023JH3/10200001] ; Liaoning Xingliao Talents-Top-notch Young Talents Project[XLYC2203064] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001331253800003 |
| 出版者 | SPRINGER |
| 资助机构 | Excellent Youth Fund of Liaoning Natural Science Foundation ; Liaoning Xingliao Talents-Top-notch Young Talents Project |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu, Zhongqiu |
| 作者单位 | 1.Northeastern Univ, Key Lab Ecol Met Multimet Mineral, Minist Educ, 3 11 Wenhua Rd, Shenyang 110819, Peoples R China 2.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiong, Yongtao,Liu, Zhongqiu,Zhao, Zibo,et al. Numerical Investigation on the Evolution Behavior of Solidification Structure in Titanium Alloy During Vacuum Arc Remelting Process[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2024:18. |
| APA | Xiong, Yongtao,Liu, Zhongqiu,Zhao, Zibo,&Li, Baokuan.(2024).Numerical Investigation on the Evolution Behavior of Solidification Structure in Titanium Alloy During Vacuum Arc Remelting Process.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,18. |
| MLA | Xiong, Yongtao,et al."Numerical Investigation on the Evolution Behavior of Solidification Structure in Titanium Alloy During Vacuum Arc Remelting Process".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE (2024):18. |
入库方式： OAI收割
来源：金属研究所
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