A Front Tracking Model for Transient Solidification of Al-7wt%Si in a Bridgman Furnace

被引：13
|
作者：
Mooney, R. P. [1 ,2 ]
McFadden, S. [1 ,2 ]
Rebow, M. [1 ]
Browne, D. J. [3 ]
机构：
[1] Dublin Inst Technol, Dublin 1, Ireland
[2] Trinity Coll Dublin, Dublin 2, Ireland
[3] Natl Univ Ireland Univ Coll Dublin, Dublin 4, Ireland
来源：
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2012年 / 65卷 / 06期
关键词：
Front tracking; Bridgman furnace; Velocity change; Al-Si; Columnar growth;
D O I：
10.1007/s12666-012-0201-2
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The Bridgman furnace is widely used in industry and research. This paper outlines a working one-dimensional model for tracking the columnar solidification front in a Bridgman furnace where the pulling velocity, and hence front position, change as a function of time. The front tracking model is applied to a fixed grid of control volumes using an explicit numerical finite difference scheme to solve the heat equation over a finite domain. The model is demonstrated by way of a notional scenario, namely, Bridgman furnace solidification of a 16-mm diameter rod of Al-7wt%Si. The results show how the evolution of temperature distribution, thermal history, and front position are affected by a step change in pulling velocity.
引用
收藏
页码：527 / 530
页数：4
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