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A Study on the High Temperature Deformation Behavior of a Solid Solution Aluminium Alloy
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 Title & Authors
A Study on the High Temperature Deformation Behavior of a Solid Solution Aluminium Alloy
Kim, Ho-Gyeong;
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 Abstract
The creep characteristics of an Al-5wt.% Ag alloy including the stress exponent, the activation energy for creep and the shape of the creep curve were investigated at a normalized shear stress extending from and in the temperature range of 640-873 K, where silver is in solid solution. The experimental results shows that the stress exponent is 4.6, the activation energy is 141 kJ/mole, and the stacking fault energy is , suggesting that the creep behavior of Al-5 wt.% Ag is similiar to that reported for pure aluminum, and that under the current experimental conditions, the alloy behaves as a class II(metal class). The above creep characteristics obtained for Al-5 wt.% Ag are discussed in the light of prediction regarding deformation mechanisms in solid solution alloys.
 Keywords
Double Shear Geometry Specimen;Stress Exponent;Steady State Creep Rate;Activation Energy;Stacking Fault Energy;Normalized Creep Rate;Class II Alloy;Deformation Cirterion;
 Language
Korean
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