Aluminum alloy based composite materials

Aluminum alloy based composite materials are:

Fiber reinforced, particle and whisker reinforced, lamellar, and directional solidification eutectic.

Fiber reinforced aluminum alloy based composite materials have good comprehensive capabilities.

At present, carbon fiber, boron fiber, silicon carbide fiber, and aramid fiber have been developed successively. These are all high-performance fibers, but long fibers are expensive, the preparation process is complicated, and the cost is very high, so their development and application are subject to certain restrictions. They are currently mainly used in the aerospace industry and a few civilian industries.

Particle-reinforced aluminum alloy based composite materials, this preparation process is relatively easy.

The price of particle reinforcement is not high, and it can be made by conventional heating methods such as casting, hot extrusion, hot forging, and hot rolling.

Although the mechanical properties of particle-reinforced aluminum-based composites are not as high as those of fiber-reinforced aluminum-based composites, their hardness, wear resistance, fatigue resistance, high-temperature yield strength, and thermal stability are much better than those of aluminum alloys.

The reinforcements are evenly distributed in the aluminum alloy, so the composite material is isotropic.

At present, the application of particle-reinforced aluminum alloy composites has achieved certain development.