Manufacturing of porous Mg-Zn composites by spacer method and its compression properties

In this study, porous Mg-Zn composites with designed relative density were manufactured by spacer method. The effects of porosity and Zn addition rate on the compression properties were investigated. The relative density of the manufactured porous Mg-Zn composites were a little lower than the design value, but it was almost controllable. The compressive stress-strain curves of porous Mg-Zn showed the peak value of stress in the initial stage of deformation followed by a long plateau and the steeply rise in stress by densification. The compression properties showed relative density dependence, and the higher the relative density, the higher the Youngʼs modulus, plateau stress, and initial peak stress. Youngʼs modulus increased as the amount of Zn added increased, but the plateau stress and initial peak stress were higher when Zn was added at 5 mass% than when 10 mass% was added.