Electrolytic Al-Si alloy（EASA）is characterized by self-modified structure in the castings

where Si particles and iron or Ti-bearing phase exhibit fine structure with a large amount of primary aluminum dendrite.The structure in self-modified state is relatively insensitive to cooling rate during solidification process

and is inherited upon repeated remelting

exhibiting excellent toughness and plasticity.Self-modification in EASA is attributed to the occurrence of a severe undercooling during solidification

which is related with the formation of homogeneous melt and the electric current in electrolysis process.