Augmented mechanical properties of magnesium AZ91 reinforced with graphene

Abstract

Graphene has been impressing us in recent years by boasting some very spectacular things. Its outstanding mechanical properties made the material to be used in composites for amplifying the strength. Mechanical properties usually take precedence for magnesium alloy when it would be used as a structure material. The main focus of this project is to manufacture magnesium reinforced metal matrix composites using graphene nano powder through stir casting to enhance the mechanical properties. The uniform distribution of graphene nano powder and its large specific surface area per volume is embedded in magnesium matrix leads to increase in micro hardness, tensile solidity, fracture exertion of the composite. Compared with standard single crystal magnesium, the Mg AZ91 with 0.3 and 0.7 wt % graphene nano powder composite indicates improvement in mechanical properties. In addition to standard procedures for the tests and dissection of mechanical properties of synthesized composite, dewintor invertor trinocular metallurgical microscopy, is used to investigate the phase segmentation, grain size and phase contrast. Additionally, Mechanical properties of synthesized composites of two different composition of graphene were compared.