Mushy-zone Rayleigh number to describe macrosegregation and channel segregate formation during directional solidification of metallic alloys

被引：22
|
作者：
Tewari, SN [1 ]
Tiwari, R
Magadi, G
机构：
[1] Cleveland State Univ, Dept Chem & Biomed Engn, Cleveland, OH 44115 USA
[2] Cleveland State Univ, Dept Chem Engn, Amer Bur Shipping, Houston, TX 77060 USA
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2004年 / 35A卷 / 09期
关键词：
D O I：
10.1007/s11661-004-0240-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A recently defined mushy-zone Rayleigh number (R-aM) that includes side-branching contributions to the mushy-zone permeability has been examined for its correlation with the longitudinal macrosegregation and channel segregate formation. The Rayleigh number shows (1) a strong correlation between the extent of longitudinal macrosegregation and increase in the mushy-zone convection and (2) a good ability to predict the formation of channel segregates during directional solidification.
引用
收藏
页码：2927 / 2934
页数：8
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