“…The Al-Si alloy has excellent casting, processing, and forming qualities, as well as strong strength and a low coefficient of thermal expansion. Amongst the cast aluminum alloys, in a variety of situations, Al-Si alloys find widespread usages, such as the production of automotive engine pistons, cylinder blocks, car chassis, wheels, and other components [ 1 , 2 , 3 , 4 , 5 , 6 ]. The Al-9.5Si-5Cu-0.8Mn-0.6Mg alloy is obtained by melting and casting before extrusion, during which time problems such as the segregation of alloy elements, developed dendrites, and coarse brittleness often occur, giving rise to a decrease in the alloy’s mechanical properties [ 7 ].…”