Nanocomposites with Aluminum Matrix: Preparation and Properties

Metal matrix nanocomposites are a novel class of materials, consisting of a metallic matrix reinforced by nanoparticles. They display interesting mechanical and functional properties, which can be carefully tailored and may be largely different than those of the base metal. Aluminum matrix nanocomposites have risen particular attention thanks to their low density and improved strength. Some issues in the production of nanocomposites are caused by the low wettability of nanoparticles; hence, innovative synthesis methods have been developed. In this work, the main production routes are reviewed; moreover, the strengthening mechanism acting in nanocomposites and the resulting mechanical properties are reported. Finally, the influence of reinforcement on precipitation processes in aluminum-based composites and some potential applications are described.