NUMERICAL INVESTIGATION OF THE INFLUENCE OF FORCED CONVECTION INDUCED BY A TRAVELLING MAGNETIC FIELD DURING SOLIDIFICATION OF METALLIC ALLOYS

被引：3
作者：
Noeppel, A. [1 ]
Budenkova, O. [1 ,2 ]
Fautrelle, Y. [1 ]
机构：
[1] Polytech Inst Grenoble, SIMAP, EPM, Grenoble, France
[2] AF Ioffe Phys Tech Inst, St Petersburg, Russia
来源：
MAGNETOHYDRODYNAMICS | 2009年 / 45卷 / 04期
关键词：
PB-SN ALLOYS; SOLUTE DIFFUSION-MODEL; CHANNEL FORMATION; FLUID-FLOW; GROWTH;
D O I：
10.22364/mhd.45.4.2
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Two-dimensional axisymmetric numerical simulations of Bridgman solidification of a binary alloy Al-Ni 3.5wt% under forced convection induced by a travelling magnetic field (TMF) are performed. It is found that the TMF promotes segregation through the formation of a large channel, which can appear either at the center of an ingot or at its periphery. Position of the channel depends on the direction of applied magnetic force that corresponds to results of earlier experiments. A phenomenon of instability due to the competition between natural and forced convection in the mushy zone influencing the shape of the channels has been demostrated.
引用
收藏
页码：497 / 503
页数：7
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