Characterization of Refining the Morphology of Al–Fe–Si in A380 Aluminum Alloy due to Ca Addition

Aluminum–silicon (Al–Si) alloys are the most commonly cast aluminum alloys. Fe is deleterious element for Al–Si die casting alloys, as its existence causes precipitation of substantial intermetallics that result in unsatisfactory mechanical performance alloy, such ductility. Hence, controlling morphology and formation AlFeSi phase, particularly β-AlFeSi vital improving ductility Herein, Ca was added to A380 morphological changes resulting from influence on phase were characterized. The outcomes revealed according different cooling rates, specific amounts addition (0.01–0.1 wt.%) capable refining α-AlFeSi transforming into α-AlFeSi. Moreover, could also modify eutectic silicon. transformation mechanism role morphologies Al2CaSi2 analyzed.