Hot deformation behavior and processing map of 4045 aluminum alloy

Isothermal compression tests of 4045aluminum alloy were carried out at the strain rate range of 0.01～10s-1 and at the temperature range of 300～450℃ on Gleeble-3500system to study the hot deformation behavior and hot workability.The results show that the flow behavior of 4045aluminum alloy can be described by the hyperbolic-sine equation with the average activation energy of 189.93kJ/mol.The processing maps were calculated on the basis of the dynamic materials model(DMM).The optimum processing parameters were obtained at strain rate range of around 0.1～0.3s-1 and deformation temperature range between 380°C and 450°C on the basis of processing map and microstructural evolution analysis.