Study on Solidification Microstructure Characteristic of AZ91 Magnesium Alloy in Semi-solid
The microstructures obtained by compressive deformed AZ91 Magnesium alloy, followed by the isothermal treatment at semisolid temperature and then squeezed cast in metal mould were analyzed. The results showed that during the reheating process, the liquid pools inside the crystals were observed in the deformed AZ91 Magnesium alloy. The re-solidified microstructures were eutectic( α+β ) as those at grain boundaries. The liquid pools within the crystals can improve plasticity of Magnesium alloy.