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Hot compression tests over the temperature range from 300°C to 450°C and strain rates range from 0.01s −1 to 10s −1 of homogenized Al–7.68Zn–2.12Mg–1.98Cu–0.12Zr alloy were carried out on a Gleeble-3500 thermal simulation machine to characterize its hot deformation behavior. The results showed that the flow stress can be predicted by a two-stage constitutive model based on the dislocation...
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