Pembentukan fasa intermetalik α-Al8Fe2Si dan β-Al5FeSi pada paduan Al-7wt%Si dengan penambahan unsur besi dan stronsim = a-Al8Fe2Si and B-Al5FeSi intermetallic phase formation on Al-7wt% Si alloy with the addition of iron and stronsium = α-Al8Fe2Si AND β-Al5FeSi intermetallic phase formation on Al-7wt%Si alloy with the addition of iron and stronsium