Influence of Sr modification and Ti grain refinement on the morphology of Fe-rich precipitates in eutectic Al–Si die cast alloys

The morphology of AlFeSi intermetallic compounds present in the eutectic Al–Si alloy was studied. The study was carried out on the Al–12 wt.%Si commercial alloy without any additions and after adding refiners and/or modifiers. A moderate refinement of the secondary β phase was obtained after simultaneous addition of Ti and Sr.