DETERMINATION OF FLOW-STRESS .1. CONSTITUTIVE EQUATION FOR ALUMINUM-ALLOYS AT ELEVATED-TEMPERATURES

被引：190
作者：
SHEPPARD, T
WRIGHT, DS
机构：
[1] Department of Metallurgy and Materials Science, Imperial College of Science and Technology, London
来源：
METALS TECHNOLOGY | 1979年 / 6卷 / JUN期
关键词：
D O I：
10.1179/030716979803276264
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
An alternative form of the hyperbolic sine relationship is developed for use as a constitutive equation at elevated temperatures. It is shown how an optimization technique may be applied to results from torsion tests to determine the constants in this equation and that this method must be more accurate than those presented previously. Experimental results for two aluminium alloys indicate that the activation energy during hot torsion testing is the same as the activation energy for bulk self-diffusion. It is shown that thermal changes occurring during testing affect results significantly. © 1979, The Metals Society. All rights reserved.
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页码：215 / 223
页数：9
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