1. a) Make sketches to differentiate between microstructures incastings generated by homogeneous and by heterogeneous nucleation.What sort of structures provide the best mechanical properties?
b) For a simple binary alloy exhibiting complete solidsolubility, describe how a typical composition will solidify fromthe moltern state. What is coring and what would encourage such analloy to be cored? Can coring happen in alloys exhibiting aneutectic reaction?
