Determination of flow stress under hot deformation conditions

被引：14
|
作者：
Solhjoo, Soheil [1 ]
机构：
[1] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran, Iran
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2012年 / 552卷
关键词：
Constitutive modeling; Hot deformation; Stress and strain;
D O I：
10.1016/j.msea.2012.05.057
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In order to predict the flow stress curves up to peak under the hot working conditions two crucially modified models are presented. The modification is done by considering the effects of both temperature and strain rate. Besides, the ability of prediction at very low strains is added to them. Furthermore a new mathematical model has been developed to estimate the stress-strain curves beyond the peak via a secant hyperbolic function. The predicted results are found to be in accord with empirical values. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：566 / 568
页数：3
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