Abstract
Abstract The flow behavior and processing maps of homogenized AA7085 aluminum alloy were investigated by isothermal hot compression tests in the temperature range of 300∼450 °C with strain rates of 0.01∼10 s−1. Microstructure was characterized using Optical microscopy (OM), electron back-scattered diffraction (EBSD) and transmission electron microscopy (TEM). The results show that the superimposed processing maps at different strains exhibit the optimized deformation parameters with the temperature of 390∼450 °C and strain rates lower than 0.1 s−1. Microstructure characterization reveals that dynamic recovery and recrystallization are the main deformation mechanisms in the safe regions. At lower temperature and lower strain rate, the coarsening of particles between ɛ=0.5 and ɛ=0.7 may be responsible for the transformation of processing map from unstability to safe domain.
Published Version
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