ALUMINUM MATRIX COMPOSITES (AMC)

This is the widest group of Metal Matrix Composites. Matrices of Aluminum Matrix Composites are usually based on aluminum-silicon (Al-Si) alloys and on the alloys of 2xxx and 6xxx series. Aluminum Matrix Composites (AMC) are reinforced by: Alumina (Al2O3) or silicon carbide (SiC) particles (particulate Composites) in amounts 15-70 vol%; Continuous fibers of alumina, silicon carbide, Graphite (long-fiber reinforced composites); Discontinuous fibers of alumina (short-fiber reinforced composites).The following properties are typical for Aluminum Matrix Composites: High strength even at elevated temperatures; High stiffness (modulus of elasticity); Low density; High thermal conductivity; Excellent abrasion resistance.