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

页码：527 / 530

页数：4

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