“…Since the volume fraction of the precipitates is subjected to the solubility of Sn in α-Mg, Huang [14] suggests that one of the most effective ways to improve age-hardened property is to refine the precipitate through micro-alloying. For further enhancement of mechanical properties, some micro-alloying elements [6,11,[15][16][17][18] such as Ca, Di, Sr, Mn, La, Ag, Cu, and the like, have been added to this system. Addition of Zn [19,20] to Mg-5Sn alloys results in microstructure refinement and second phase morphology modification, leading to a significant improvement in mechanical properties.…”