The hot compression tests of spray-formed Al-9Mg-0.5Mn alloy was performed using thermal simulation tests in a Gleeble-3500 simulator.The effects of deformation temperature

strain and strain rate on dynamic recrystallization in spray-formed Al-9Mg-0.5Mn alloy were investigated.The results show that the working hardening plays a dominant role in the initial stage of deformation

and the flow stress is increased with increasing in strain.With increasing in strain

the main soft mechanism is characterized by dynamic recrystallization.The storage energy is increased with increasing in deformation temperature as a result of accelerating nucleation and growth of dynamic recrystallization.At a lower strain rate

there is enough time to grow for dynamic recrystallization core and substructure

which promotes dynamic recrystallization.So the microstructure of the alloy is completely recrystallized structure.