Effect of strain rate on deformation behavior of aluminum matrix composites with Al2O3 nanoparticles

Abstract

This study aims to investigate the quasi-static and high strain rate deformation of an aluminumbased metal matrix composite reinforced with Al2O3 nanoparticles. The addition of Al2O3 nanoparticles with an optimal weight percentage increased the strength and energy absorption capacity of the composite material. The deformation characteristics of the material were found to be strain rate sensitive. It was concluded that the usage of an optimal weight percentage of nanoparticles results in a markedly higher energy absorption capacity in a variety of strain rates of deformation. Moreover, the energy absorption capacity of the present metal matrix composites increased significantly at the higher strain rates of deformation. It was found that the excessive addition of nanoparticles to the metal matrix decreases the energy absorption capacity as well as strain rate sensitivity of the composite material.

High Strain Rate Response of In-Situ TiB2/7055 Composite by Taylor Impact

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Tribofilm formation on the VN/7075 composite surface under sulfur-containing boundary lubrication

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