Abstract
This paper aims to research the thermal deformation behaviors of AZ80 and ZK60 magnesium alloys. Specifically, the AZ80 and ZK60 magnesium alloys were experimented under different temperatures and in different molds, and then their thermal deformation data were compared. Results have shown that the tensile strength and elongation of the AZ80 magnesium alloy extruded parts were positively correlated with the increase of extrusion temperature, but the tensile strength and elongation showed inflection points at 380°C and 350°C, respectively. As for ZK60 magnesium alloy in the 70° cone mold, the extrusion force is minimal, so the cone mold with the die angle of 70° were used in all thermal extrusion experiments on ZK60 pipe. It is concluded that the stress and strain curves of AZ80 and ZK60 magnesium alloys obtained from the experimental model in this paper are accurate, indicating high accuracy of the model.
