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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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Effect of heat treatment on the hot deformation behaviour of AA6082 alloy

Zhang, B. and Baker, T.N. (2004) Effect of heat treatment on the hot deformation behaviour of AA6082 alloy. Journal of Materials Processing Technology, 153-154. pp. 881-885. ISSN 0924-0136

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Abstract

The hot deformation behaviour of AA6082 alloy treated by (a) a T4 temper and (b) annealing, was studied by compression testing over a range of temperature, 300-500 °C, with strain rates of 0.005, 0.05 and 0.09 s−1. It was observed that the flow stresses of the alloy treated by the T4 temper were significantly higher than those of the annealed alloy. Furthermore, the stress-strain curves of the alloy treated by the T4 temper showed significant softening during deformation at the lowest strain rate, while there was no significant softening of the alloy treated by annealing under any of the deformation conditions. The activation energy for hot deformation was determined for different strains, using a power law equation, and was found to change significantly with strain for the alloy treated by the T4 temper. The stress-strain data calculated from a power law equation, with strain dependant parameters, show a very good fit with the experimental data for the alloy treated by the T4 temper. This phenomenon was explained by the occurrence of dynamic precipitation and coarsening during deformation.