Nucleation and Growth of 先进材料疑固实验室 solid Laboratory of Advanced Materials Solidification 500m 500um Without adding grain refiner 0.2wt%Al5TiB added to the melt to form grain refiner particles Macrographs of a A356 casting 上游充通大￥ SHANGHAI JIAO TONG UNIVERSITYMacrographs of a A356 casting Without adding grain refiner 0.2wt% Al5TiB added to the melt to form grain refiner particles Nucleation and Growth of solid