INVERSE SEGREGATION FOR A UNIDIRECTIONAL SOLIDIFICATION OF ALUMINUM-COPPER ALLOYS

被引：32
作者：
CHEN, JH
TSAI, HL
机构：
[1] Department of Mechanical and Aerospace Engineering and Engineering Mechanics, University of Missouri-Rolla, Rolla
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1993年 / 36卷 / 12期
关键词：
D O I：
10.1016/0017-9310(93)90035-5
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A mathematical model has been developed to simulate the inverse segregation for a unidirectional solidification of Al Cu alloys cooled from the bottom. It is found from the present study that the fluid flow of solute-rich liquid in the mushy zone caused by solidification shrinkage is the main driving force for the formation of inverse segregation. The predicted copper concentration in the solidified alloys is in good agreement with the published experimental data. Several interesting transient behaviors of solute redistribution in the mushy zone, which were not reported before, are also discussed.
引用
收藏
页码：3069 / 3075
页数：7
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