Influence of Hot Extrusion Process on Microstructure and Property of Magnesium Alloy ZK60

The hot extrusion process was adopted to carry on the forming of ZK60 magnesium alloy,the effect of extrusion ratios and test temperatures on the microstructure and mechanical properties of ZK60 alloy under T6 condition was studied.The results show that the microstructure of ZK60 alloy is effectively refined after hot extrusion;the grains become finer and the tensile strength of the extruded ZK60 alloy gets obviously enhanced with increase of extrusion ratio.In this experiment,the ZK60 magnesium alloy at lower temperature 300℃ can gain homogeneous microstructure and good mechanical properties.