Effect of deformation parameters on microstructure and mechanical properties of ZK60 magnesium alloy

Using planar compression experiments,metallographic observation and the mechanical properties tests,the microstructure and mechanical properties of ZK60 magnesium alloy under homogenization treatment(420 ℃×12 h)and further deformation at different temperature(260,300,340,380,420 ℃)at different equivalent plastic strain(0.80,1.59,2.07,2.38,2.65)were studied.The results show that the tensile strength of ZK60 alloy increases firstly and then decreases as the deformation temperature increases at the same plastic strain.However,the elongation of ZK60 alloy increases firstly and then decreases and increases finally.The tensile strength and elongation of ZK60 alloy increase firstly and then decrease as the plastic strain increases at the same deformation temperature.When the equivalent strain is 2.07,fine equiaxed grains are observed,which lead to the high tensile strength and elongation for ZK60 alloy.