断弧时长对钛合金VAR铸锭质量的影响研究

doi:10.11896/cldb.25060116

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Abstract Aiming to the arc-off problem during the vacuum arc remelting (VAR) process of titanium alloy ingots, this work systematically investigated the influence of the re-ignition delay time (5 min, 20 min, 45 min, 65 min, 90 min, 120 min) after arc extinction on solidification behavior and elemental distribution within the molten pool by establishing a multi-physics coupled VAR model. The results demonstrate that under normal mel-ting conditions, the molten pool shape transitions from U-shaped to deep U-shaped, eventually forming a deep V-shaped pool towards the end of the stable melting period. Prolonging the re-ignition delay time intensifies heat loss from the molten pool, leading to rapid advancement of the solidification front. When re-ignition occurs after a 5 min delay, localized solidification has already begun at the pool periphery, and significant concentration differences emerge in the arc-off region, with deviations in Al and V concentrations reaching 0.04% and 0.02%, respectively. When the delay extends to 120 min, the molten pool completely solidifies, and the concentration deviations of Al and V in the arc-off region increase substantially to 0.99% and 0.30%, respectively, significantly exacerbating axial solute segregation. Implementing an additional melting pass effectively eliminates the composition deviation induced by arc-off. Furthermore, the optimized four-pass melting process (producing a Φ720 mm fi-nished ingot) showed no significant difference in elemental distribution uniformity compared to the conventional three-pass process (producing a Φ640 mm finished ingot), indicating that compositional anomalies caused by arc-off can be remedied through process compensation.

Key words： titanium alloy vacuum arc remelting (VAR) arc-off solute segregation molten pool solidification

Published: 25 July 2026 Online: 2026-08-12

CLC number:

TF132

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	Articles by authors
	XU Ning
	CAO Jianghai
	WANG Zekai
	LIU Yuming
	LI Wei
	HOU Zhimin

Cite this article:

XU Ning,CAO Jianghai,WANG Zekai, et al. Study on the Effect of Arc-off Duration on the Quality of Titanium Alloy VAR Ingots[J]. Materials Reports, 2026, 40(14): 25060116-6.

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https://www.mater-rep.com/EN/10.11896/cldb.25060116 OR https://www.mater-rep.com/EN/Y2026/V40/I14/25060116

1 Jin H X, Wei K X, Li J M, et al. The Chinese Journal of Nonferrous Metals, 2015, 25(2), 280 (in Chinese).
金和喜, 魏克湘, 李建明, 等. 中国有色金属学报, 2015, 25(2), 280.
2 Liu Q M, Zhang Z H, Liu S F, et al. Journal of Iron and Steel Research, 2015, 27(3), 1 (in Chinese).
刘全明, 张朝晖, 刘世锋, 等. 钢铁研究学报, 2015, 27(3), 1.
3 Xin S W, Liu X H, Zhang S Y, et al. Rare Metal Materials and Engineering, 2023, 52(11), 3981 (in Chinese).
辛社伟, 刘向宏, 张思远, 等. 稀有金属材料与工程, 2023, 52(11), 3981.
4 Li Y H, Zhang W X, Chen X L, et al. Titanium Industry Progress, 2022, 39(1), 43 (in Chinese).
李永华, 张文旭, 陈小龙, 等. 钛工业进展, 2022, 39(1), 43.
5 He D, Li J Y, Yao X H, et al. Materials Research and Application, 2025, 19(3), 481(in Chinese).
何东, 李佳怡, 姚心海, 等. 材料研究与应用, 2025, 19(3), 481.
6 Xue Q Z, Zou Z, Wang Z, et al. Materials Research and Application, 2026, 20(6), 624(in Chinese).
薛庆增, 邹卓, 王哲, 等. 材料研究与应用, 2026, 20(6), 624.
7 Shi W, Qian H J, Huang Z Y, et al. Gas Turbine Experiment and Research, 2024, 37(1), 49(in Chinese).
石炜, 钱泓江, 黄志勇, 等. 燃气涡轮试验与研究, 2024, 37(1), 49.
8 Fan K, Wu L C, Li J J, et al. Rare Metal Materials and Engineering, 2020, 49(3), 871 (in Chinese).
樊凯, 吴林财, 李俊杰, 等. 稀有金属材料与工程, 2020, 49(3), 871.
9 Karimi-Sibaki E, Kharicha A, Vakhrushev A, et al. Journal of Materials Research and Technology, 2022, 19, 183.
10 Patel A, Fiore D. In:IOP Conference Series:Materials Science and Engineering. Leoben, 2015, pp. 143.
11 Bhar R, Jardy A, Chapelle P, et al. Metallurgical and Materials Transactions B, 2020, 51, 2492.
12 Wang Y Y, Liu X H, Xia Y, et al. Rare Metal Materials and Engineering, 2023, 52(12), 4245 (in Chinese).
王阳阳, 刘向宏, 夏勇, 等. 稀有金属材料与工程, 2023, 52(12), 4245.
13 Wang H Q, Yun P F, Liu H, et al. Special Steel Technology, 2017, 23(1), 43 (in Chinese).
王宏权, 贠鹏飞, 刘华, 等. 特钢技术, 2017, 23(1), 43.
14 Jing Z Q, Sun Y H, Chen L, et al. Rare Metal Materials and Engineering, 2023, 52(6), 1994 (in Chinese).
靖振权, 孙彦辉, 陈炼, 等. 稀有金属材料与工程, 2023, 52(6), 1994.
15 Yang J, Cao J H, Hou Q L, et al. Titanium Industry Progress, 2023, 40(3), 33 (in Chinese).
杨健, 曹江海, 侯秦龙, 等. 钛工业进展, 2023, 40(3), 33.
16 Jing Z Q, Sun Y H, Chen L, et al. Rare Metal Materials and Engineering, 2023, 52, 1994.