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Superplastic behavior of a 7055 aluminum alloy |
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| Authors: | R Kaibyshev T Sakai F Musin I Nikulin H Miura |
| Affiliation: | a Institute for Metals Superplasticity Problems, Russian Academy of Sciences, Khalturina 39, Ufa 450001, Russia b Department of Mechanical and Control Engineering, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan |
| Abstract: | It is shown that a high strength 7055 aluminum alloy with partially recrystallized initial structure exhibits superplastic behavior in the temperature interval 400–490 °C within a wide strain rate range from 8.3×10?5 to 3.3×10?2 s?1. Maximum total elongation of about 960% and strain rate sensitivity coefficient, m, of 0.6 were obtained at a temperature of 450 °C and a strain rate of 3.3×10?4 s?1. |
| Keywords: | Aluminum alloys High temperature mechanical properties Microstructure Continuous dynamic recrystallization |
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