In this study, SiCp-SiO2/6061Al composites were synthesized by integrating SiC and SiO2 particulates into a 6061Al matrix, followed by ball milling and hot isostatic pressing sintering. The impact of ball milling duration on microstructure, mechanical properties, corrosion resistance, and thermal properties was evaluated. After 10h of ball milling, reinforcement particles were uniformly dispersed, achieving a material density of over 98%. Extending milling to 15h enhanced tensile strength to 253.53MPa and flexural strength to 433.56MPa, with a maximum elongation at break of 6.4%. Uniform SiO2 distribution improved corrosion resistance, evidenced by a self-corrosion potential of -1209 mV and a self-corrosion current density of 53.02µA·cm-2. After 20h, the lowest thermal expansion coefficient, 19.87×10-6·K-1, was achieved. However, agglomerated particles after 5h resulted in inferior thermal properties, including a thermal expansion coefficient of 20.45×10-6·K-1 and thermal conductivity of 94W·m-1·K-1. The optimal ball milling duration for these composites was determined to be 10h, balancing performance and cost-effectiveness.