Effects of VAR （Vacuum Consumable Arc Remelting） Processing Parameters on Solidification Behavior of Ti-10V-2Fe-3Al Alloy Ingot

Yang Zhijun; Kou Hongchao; Chang Hui; Li Jinshan; Hu Rui; Zhou Lian

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Effects of VAR （Vacuum Consumable Arc Remelting） Processing Parameters on Solidification Behavior of Ti-10V-2Fe-3Al Alloy Ingot
Vol. 30, Issue 4, Pages: 295-297(2010)
Published： 2010 ，
DOI：

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[1]杨治军,寇宏超,常辉,李金山,胡锐,周廉.VAR工艺参数对Ti-10V-2Fe-3Al铸锭凝固行为的影响[J].特种铸造及有色合金,2010,30(04):295-297+285.

Yang Zhijun, Kou Hongchao, Chang Hui, et al. Effects of VAR （Vacuum Consumable Arc Remelting） Processing Parameters on Solidification Behavior of Ti-10V-2Fe-3Al Alloy Ingot. [J]. Special Casting & Nonferrous Alloys 30(4):295-297(2010)
[1]杨治军,寇宏超,常辉,李金山,胡锐,周廉.VAR工艺参数对Ti-10V-2Fe-3Al铸锭凝固行为的影响[J].特种铸造及有色合金,2010,30(04):295-297+285. DOI：

Yang Zhijun, Kou Hongchao, Chang Hui, et al. Effects of VAR （Vacuum Consumable Arc Remelting） Processing Parameters on Solidification Behavior of Ti-10V-2Fe-3Al Alloy Ingot. [J]. Special Casting & Nonferrous Alloys 30(4):295-297(2010) DOI：

摘要

采用真空自耗电弧熔炼（VAR）工艺制备Ti-10V-2Fe-3Al铸锭

研究了熔炼电流和搅拌磁场等工艺参数对铸锭凝固行为的影响

并对真空自耗电弧熔炼过程中起弧、熔炼、补缩等阶段的凝固组织及熔池形貌进行了分析。结果表明

在未加搅拌磁场时

熔池较窄

铸锭组织粗大

而施加搅拌磁场后

熔池变宽且旋转明显

铸锭宏观组织中的晶粒变小;随熔炼电流增大

熔池加深

凝固组织中的晶粒变得粗大。

Abstract

Ti-10V-2Fe-3Al alloy ingots were prepared by different vacuum consumable arc remelting （VAR） processes. The effects of melting current intensity and stirring magnetic field on solidification behavior of the ingots were investigated

and molten pool profile and solidification structure at different stages

such as arc starting

melting and feeding

were analyzed. The results indicate that without stirring magnetic field

coarse grain can be observed in the ingots with a narrow molten pool

while with stirring magnetic field

grain size becomes fine with wide molten pool and evident rotation. With increasing in current intensity

grain size becomes coarse in the ingot with deepening the molten pool.