Tensile Response of Al-Based Nanocomposites

Abstract

In recent years, aluminum matrix nanocomposites have gained increased importance compared to conventional aluminum-based alloys owing to their better mechanical, thermal, and tribological properties. High tensile strength properties are considered to be an important criterion in the selection of materials for automotive, aerospace, military, and other lightweight applications. The tensile properties of the aluminum-based nanocomposite are governed by several factors including the type of processing technology, amount of reinforcement, microstructural features, and so on. Accordingly, this article discusses the recent advancements in the fabrication of aluminum matrix nanocomposites with low volume addition of ceramics nanoparticles. Firstly, the importance of the powder metallurgy technique on the synthesis of aluminum matrix nanocomposites is discussed. Thereafter, the influence of microstructural influences of the nanoparticles on the tensile properties of the aluminum matrix composite system is outlined. Strengthening mechanisms responsible for the enhancement in the tensile yield strength properties are also discussed. The relationship between the hardness and tensile strength properties of the nanocomposites is established. The tensile strength properties of different Al matrix nanocomposites relationship is summarized. Finally, a comparison is made between the recently reported Al matrix nanocomposites systems to gain insight on the effect of hardness and particle size on the tensile strength properties.