Effects of thixoforming parameters on microstructures and mechanical properties of thixoformed AZ63 Magnesium alloy were investigated.The results indicate that the primary particle size is decreased firstly and then increased

meanwhile

tensile strength and elongation are improved firstly and then decreased with increasing in partial remelting temperature under mould temperature of 200 ℃ and remelting time of 60 min.At remelting temperature of 600 ℃

with increasing in remelting time

size and roundness of primary phase are increased

resulting in the decrease of tensile strength and elongation.Grain size

roundness

tensile strength and elongation of the alloy reach 66 μm、1.3、247 MPa and 13.7%

respectively

at 600 ℃ for 60 min with mould temperature of 200 ℃.AZ63 magnesium alloy exhibits acceptable controllability during thixo-forming

and its properties are superior to those at as-cast one.