Effect of Electromagnetic Stirring Position on Uniform Direct Chill Casting of Large-Sized 7005 Alloy Billet

被引:0
|
作者
Yajun Luo
Zhenggang Wu
Li Zhou
Min He
Zhenlin Zhang
Xiaomin Peng
Zhifeng Zhang
机构
[1] Hunan Institute of Engineering,Hunan Provincial Key Laboratory of Vehicle Power and Transmission System
[2] Hunan University,College of Materials Science and Engineering
[3] Hunan Wenchang New Material Technology Co. Ltd,undefined
[4] General Research Institute for Nonferrous Metals,undefined
来源
JOM | 2020年 / 72卷
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摘要
A numerical simulation is carried out to investigate the effect of the stirring position on large-sized 7005 alloy billet prepared by direct chill casting imposed with A-EMS and intercooling named uniform direct chill (UDC) casting. Moreover, the effect of the stirring position on the Lorentz force, fluid flow, heat transfer, and solidification occurring in UDC casting is investigated. It is found that when the stirring position moves upwards, the Lorentz force imparts the forced flow to the melt more effectively. Moreover, when the stirring position increases from 0 mm to 100 mm with respect to the graphite ring level, the maximum convection velocity of the melt increases from 150 mm/s to 210 mm/s. Furthermore, the temperature field of the melt in the sump becomes more homogeneous as the stirring position elevates. The microstructure of the 7005 billets becomes finer and uniform when the stirring position moves up to 50 mm.
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页码:4665 / 4673
页数:8
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