Phase Evaluation of Sr and CaO Added Mg‐Al‐Si Alloys

In the previous study, to modify the morphology of Mg2Si phase, we added CaO in Mg-Al-Si alloy. However, CaMgSi phase was formed by the addition of CaO in Mg-Al-Si alloy and the morphology of CaMgSi phase is needle type. Therefore, CaMgSi phase would deteriorate the mechanical properties. On the other hand, when adding Sr in CaO added Mg-Al-Si alloy, the modified CaMgSi phase was confirmed.