MATHEMATICAL MODELING OF MICROSHRINKAGE FORMATION DURING SOLIDIFICATION OF A356 CASTINGS

被引：3
|
作者：
Patel, Akash [1 ]
Nastac, Laurentiu [1 ]
机构：
[1] Univ Alabama, Dept Met & Mat Engn, Tuscaloosa, AL 35487 USA
来源：
INTERNATIONAL JOURNAL OF METALCASTING | 2014年 / 8卷 / 01期
关键词：
mathematical modeling; microshrinkage; solidification; A356; castings; Niyama criterion; model predictions; PREDICTION; POROSITY; DEFECTS;
D O I：
10.1007/BF03355568
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Several models predicting microshrinkage in castings are revised in this analysis. A mathematical model, based on Niyama criterion, is introduced here which considers the stochastic behavior of pore nucleation during casting solidification. For this model, literature validation is provided for an A356 alloy plate casting. Further validation is provided for a bar geometry cast in a silica sand mold. The model predictions match reasonably well with the experimental pore percentage profile.
引用
收藏
页码：21 / 27
页数：7
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