The bending behavior of medium and thick plates after magnesium alloy rolling was analyzed.The influence of temperature on the bending of magnesium alloy plate and the microstructure evolution of magnesium alloy plate dur-ing bending were explored.The results reveal that bending fracture stress is decreased greatly with increasing in tem-perature,which is attributed to the increase of temperature leading to the activiation of non-primary sliding and twins to decrease the deformation resistance.Bending simulation shows that the inner side is subjected to pressing stress while outer side is subjected to tensile stress,and fracture strain is higher than bending fracture strain during rolling process.Twins in tensile zone is far less than that in compressive zone of the magnesium plate during bending at 100℃,and recrystallization grain is 2.10%in tensile zone with high fractions of deformed grain and major of lower angle boundary as well as high dislocation density.Density point of(0001)pole is concentrated in ND direction,and c axis is rotated to ND direction,resulting in the poor coordination and large deformation of tensile zone,tending to crack.
Magnesium AlloyMedium and Thick PlateBending BehaviorTemperature Influence
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