Abstract: The addition of manganese（Mn） to aluminum alloys has the potential to induce the formation of strengthening phases, such as Al₆Mn. However, in aluminum alloys fabricated via conventional casting techniques, the Al₆Mn phase is generally characterized by coarse morphology and non-uniform distribution, thereby impeding its full utilization of the reinforcing effect. The double-melt mixing approach was employed to blend the melts of the Al-Mn alloy and the A356 alloy at various proportions, with the aim of manufacturing a cast aluminum alloy material featuring high strength and superior wear resistance. The results reveal that upon the double melt mixing of Al-Mn/A356, a ternary strengthening phase, namely Al-Mn-Si, is formed within the aluminum alloy matrix. As the mixing ratio of the two melts progressively decreases from 1∶6 to 1 ∶10, the distribution pattern of the Al-Mn-Si phase transitions from an initial state of enrichment to uniform dispersion.Concurrently, the average sizes of both the α-Al grains and the eutectic Si display a trend of initially decreasing followed by increasing. Moreover, with the reduction in the mixing ratio, the tensile strength of the aluminum alloy exhibits a trend of initially increasing and subsequently decreasing, whereas the elongation and the wear rate initially decrease and then increase.Specifically, when the mixing ratio is set at 1 ∶8, the fabricated cast aluminum alloy exhibits outstanding performance. Its as-cast tensile strength reaches 218.54 MPa, with an elongation of 2.18% and a wear rate of 1.17 ×10^-3mm³·N^-1·m^-1.Compared with the as-cast A356 alloy, its tensile strength is enhanced by 34.02%, the elongation is increased by 4.81%, and the wear rate is reduced by 74.45%.