Influence of Nano-Alumina and Micro-Size Copper on Microstructure and Mechanical Properties of Magnesium Alloys AZ31

ORAL

Abstract

In this paper, magnesium composites are synthesized through the addition of nano-alumina and micron size copper particulates in AZ31 magnesium alloy using the technique of disintegrated melt deposition. The simultaneous addition of Cu and nano-alumina particulates led to an overall improvement in physical, microstructural characteristics and mechanical response of AZ31. Small size and reasonably distributed second phases were formed. The 0.2{\%} yield strength increased from 180 to 300 MPa (67{\%}), while the ductility increased by almost 24{\%}. The overall tensile properties assessed in terms of work of fracture improved by 66{\%}. An attempt is made to correlate the tensile response of composites with their microstructural characteristics. The results suggest that these alloy composites have significant potential in diverse and wider engineering applications.

Authors

  • Quy Bau Bosley Nguyen

    National University of Singapore

  • Sandar Khin Tun

    National University of Singapore

  • Manoj Gupta

    National University of Singapore