Hot Compression Behavior of 6061 Aluminum Alloy

The hot-compression behavior of 6061 aluminum alloy at elevated temperature was studied on Gleeble-1500 hot simulator with the deformation temperature range of 573～773 K, the strain rate range of 0.01～2s-1 and the maximum reduction 45%. The relationship between flow stress and deformation temperature as well as strain rate of 6061 aluminum alloy was analyzed. The deformation constitutive equation at elevated temperature was established. The results show that the flow stress gets smaller with the increase of deformation temperature at the same strain rate, and becomes larger with the increase of strain rate at the same temperature. The flow stress of 6061 aluminum alloy during hot-compression can be described by Zener-Hollomon parameter under the laboratory conditions, and the deformation activation energy is 236.858 kJ/mol and stress exponent n is 8.926.