MICROSTRUCTURAL AND MECHANICAL CHARACTERIZATION OF MAGNESIUM-AZ31 ALLOY REINFORCED WITH CARBON NANOTUBES AND NANO-HYDROXYAPATITE
Ashu Tyagi, Pardeep Kumar
Department of Mechanical Engineering, Deenbandhu Chhotu Ram University of Science & Technology, Murthal, Sonipat, Haryana
Strength to weight ratio always being a key concern in the automotive and aerospace sector. Therefore in metal matrix composite (MMC), magnesium, aluminum, titanium always being preferred as matrix material. Although aluminum as a matrix material remain the first choice and widely used by the researcher because of the ease of fabrication in comparison to magnesium and titanium metal matrix composite. But magnesium is also an attractive material in terms of its properties as it is 36% and 78% lighter per unit volume than aluminum and iron respectively. Therefore the present study has investigated the effect of reinforcements such as Carbon Nanotubes (CNT) and Nano-Hydroxyapatite (NHa) on the mechanical properties of magnesium alloys based composites. The various properties has been studied and found significant improvement in the developed composite. Further the microstructures of hybrid composite materials are examined using scanning electron microscopy (SEM).The chemical analysis and distribution of reinforcement is done using the EDX.
Keywords: Magnesium, Composite, Stir Casting, Fabrication, Reinforcements.