Extrusion Force of AZ Series Mg Alloy During Thermal Simulated Extrusion Forming

AZ10,AZ31,AZ61 and AZ91 magnesium alloys were deformed with simulated extrusion system on Gleeble 1500D,which can determine the extrusion force during extrusion forming process.The microstructure of the alloys and the evolution of extrusion force were investigated.The results show that the extrusion force increases gradually with the increase of alloy element.Aimed at the same magnesium alloy,the deformed alloy with previous homogenization before extrusion has more extrusion force than that without homogenization,and dynamic recrystallization is a decisive factor in extrusion force during extrusion forming.