| abstract |
The invention relates to the technical field of brake drum development, and specifically provides a dual-phase ceramic particle reinforced aluminum matrix composite material, a brake drum and a preparation method thereof. The dual-phase ceramic particle-reinforced aluminum-based composite material includes a reinforcement, and the reinforcement is dual -phase ceramic particles composed of SiC particles and TiB particles, and the SiC particles account for 10-20wt% of the total aluminum-based composite material, The TiB 2 particles account for 5-10 wt % of the total amount of the aluminum-based composite material, and the particle size of the TiB 2 particles is 50-550 nm. Titanium diboride and aluminum alloy have good wettability and high bonding strength. The distribution of silicon carbide and titanium diboride in the base aluminum alloy is uniform, the structure is dense, and it has superior properties such as high specific strength, high specific stiffness, and high hardness. Thereby, a dual-phase ceramic particle reinforced aluminum matrix composite brake drum with excellent performance is prepared. |