The influence of Zn content on mechanical properties and damping capacities of Mg- 0.6Zr alloy was investigated by using optical microscope, tensile test and dynamic mechanical analysis. The results showed that the tensile strength and elongation of the Mg - 0.6Zr alloy were enhanced by adding trace Zn and the strength increased as the content of Zn while the elongation changed little as the content of Zn increased;meanwhile the damping capacity reduced obviously as the content of Zn increased. The results...