Copper improves impact toughness at the expense of ductility and corrosion resistance. Also copper results in the precipitation of CuAl2 particles and depending of cooling rate and modifier level, this phase could appear as block and/or (Al–CuAl2) fine eutectic colonies in the microstructure. The combination of alloying addition and the liquid alloy treatments is a good option to get better control of the microstructure during solidification and hence improves the mechanical properties eliminating the need of heat treatments, resulting in reduction of production cost