Al-Si hypereutectic alloys are widely used in industries and Hi-Tech areas, but coarse primary Si phase in casting is detrimental to the mechanical properties of the alloy. Therefore, refinement of primary silicon has been received great interest from metallurgists.
The recent condition of modification and refinement of Al-Si alloys and the removal of impurities from Al alloys are described in this thesis. The modifying efficiency of vary modifier were compared in experiments. The main results a...