Modeling of hot tearing formation during solidification

被引：55
作者：
Hatami, N. [1 ]
Babaei, R. [1 ]
Dadashzadeh, M. [1 ]
Davami, P. [2 ]
机构：
[1] Razi Met Res Ctr, Tehran, Iran
[2] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran, Iran
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2008年 / 205卷 / 1-3期
关键词：
modeling; hot tear criterion; DC casting;
D O I：
10.1016/j.jmatprotec.2007.11.260
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new criterion for the appearance of hot tears in metallic alloys is proposed. This model introduces a critical solid fraction (f(cr)) to simulate feeding. A hot-cracking sensitivity (HCS) index according to the temperature and solidification time is defined and then is compared with other hot tearing criteria. This new criterion indicates the higher cracking sensitivity for higher casting velocity and higher sensitivity in billet center in the casting and finally the calculated values are in fairly good agreement with the experimental results. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：506 / 513
页数：8
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