Hot deformation behavior of 2519 aluminum alloy

The flow stress features of 2519 aluminum alloy were studied by isothermal compression at 300450℃ and strain rate of 0.0110s~(-1) with Gleeble1500 simulated machine.The results show that the flow stress is controlled by strain rate and deformation temperature. The flow stress increases with strain rate increasing and decreases with deformation temperature increasing. The flow stress of 2519 aluminum alloy increases with strain and tends to be constant after a peak value at strain rates less than 10s~(-1), showing dynamic recovery; The flow stress decreases after a peak value with the increase of strain at strain rates of 10s~(-1) and deformation temperature higher than 350℃, showing partial dynamic recrystallization.The flow stress of 2519 aluminum alloy during high temperature deformation can be represented by Zener-Hollomon parameter including the Arrhenius term.