Deformation Mechanism Studies by Varying Height to Diameter Ratio of Al–Mg and Al–Mg–C Metal Matrix Composites

Abstract

This paper reports deformation mechanism studies by varying height-to-diameter ratio of aluminum (Al), aluminum–magnesium (Al–Mg) and aluminum–magnesium–carbon (Al–Mg–C) metal matrix composites prepared using stir casting technique. Specimen were machined to the required sizes, having different [Formula: see text] ratios (i.e. [Formula: see text], [Formula: see text] and [Formula: see text]). Mechanical properties such as hardness and deformation of the undeformed and deformed specimens were examined. Deformation test was performed under a load of 14 tonnes at different interfacial frictional conditions, i.e. dry, solid lubrication and liquid lubrication. The study revealed significant improvement in densification and hardness behavior in the composites as compared to its base metals and alloys.