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Numerical Heat Transfer, Part A: Applications
An International Journal of Computation and Methodology
Volume 20, 1991 - Issue 2
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Original Articles

NUMERICAL METHOD FOR SOLUTION OF STRONGLY COUPLED BINARY ALLOY SOLIDIFICATION PROBLEMS

Darning Xu Department of Metallic Materials and Technology, Harbin Institute of Technology, Harbin, 150006, People's Republic of China
&
Qingchun Li Department of Metallic Materials and Technology, Harbin Institute of Technology, Harbin, 150006, People's Republic of China
Pages 181-201 | Received 12 Jun 1990, Accepted 27 Nov 1990, Published online: 27 Apr 2007
 
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Abstract

A pure numerical method is proposed for solving the solidification temperature, solid fraction, and liquid composition correlation (T-fs-CL) in strongly coupled binary solidification problems. The method accommodates both single-phase and eutectic solidification processes and eliminates the need to assume any specified function for the local T-fs-CL relationship or the linearizations of the liquidus and solidus for a given alloy. A sample calculation performed with an Al-4.5%Cu alloy, a hypoeutectic system, illustrates the feasibility of the established numerical method. Further discussion shows that the proposed numerical solution to the T-fs-CL coupling will also be suitable for local remelting simulations.

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