STRESSES AND CRACKING DURING DIRECT CHILL CASTING OF AZ31 ALLOY BILLET

被引：0
|
作者：
Grandfield, J. F. [1 ]
Nguyen, V. [2 ]
Bainbridge, I. F. [3 ]
机构：
[1] Grandfield Technol Pty Ltd, Brunswick, Vic, Australia
[2] CSIRO Mat Sci & Engn, Clayton, Vic, Australia
[3] Univ Queensland, Brisbane, Qld 4072, Australia
来源：
MAGNESIUM TECHNOLOGY 2009 | 2009年
关键词：
direct chill casting; AZ31; magnesium; hot tearing; HOT TEARING FORMATION; MATHEMATICAL-MODEL;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The Alsim FEM model which has been applied to aluminum DC casting was applied to the problem of crack formation during vertical direct chill casting of magnesium alloys. The model is a fully coupled thermal stress model. Predictions were compared to crack incidence observed for a variety of cast start speed conditions used on AZ31 alloy, 208 mm diameter billet casting. Crack incidence was related to the pool depth development and other criteria such as the liquid pressure in the mush. The model can be used to develop improved starting head designs and cast start practices.
引用
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页码：129 / +
页数：2
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