
In this study, grain refinement efficiency of a new oxide master alloy based on MgAl2O4 was demonstrated on an A357 alloy. The grain size of the reference alloy was reduced by 50-60% with the addition of the master alloy and introduction of ultrasonic cavitation. A higher addition of master alloy was found to be not benificial in further reducing the grain size.
Oxide, 530, Grain refinement, Casting, 620, Ultrasonic processing
Oxide, 530, Grain refinement, Casting, 620, Ultrasonic processing
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