The Effect of Ca Addition on Microstructure and Mechanical Properties of Gravity Cast Mg–Zn–Y Alloy

Mg–Zn–Y alloy with I-phase (Mg3Zn6Y) is particularly attractive because of the coherent interface between the I-phase (Mg3Zn6Y) and matrix phase, which sustains a strong bond and has low interfacial energy improve plastic deformation in the process like rolling and extrusion. Therefore, these Mg–Zn–Y alloys with I-phase (Mg3Zn6Y) have been focused a lot recently for wrought Magnesium alloys. However, these alloys can be used as the cast alloys because the I-phase (Mg3Zn6Y) exhibits better thermal stability than many other phases, which could enhance creep resistance at elevated temperature.In this study, the effect of Ca addition on microstructure and mechanical properties of I-phase (Mg3Zn6Y) containing Mg–Zn–Y alloys were investigated to develop creep resistant Mg alloys.