Hypereutectic Al-Si alloys are known to be suitable for wear-resistance material because of its low density, high tensile properties and low coefficient of thermal expansion. But the alloys fabricated by normal Ingot Metallurgy worsen the mechanical properties due to the coarse block-like or plate-like angular primary Si particles. Multi-Layer Spray Deposit (MLSD) technology is a kind of rapid solidification with high cooling velocity up to 1 04-1 06K/sec, which can improve the microstructure, le...