Synthesis characterization and wear behavior studies of mgmo mgmica composites fabricated by powder metallurgy processing method

Abstract

Over the past decade, magnesium has been a promising lightweight metal for weight critical applications such as in the transportation sector. Since magnesium being the lightweight structural metal with tremendous potential in weight critical applications, the use of traditional magnesium has been limited in the industry when compared to aluminium. The cost, preparation conditions and durability in fatigue, impact, corrosion limit the magnesium utilization. Improved properties of magnesium-based materials will lead to massive usage of magnesium. Several upstream studies have been conducted on magnesium-based materials to tailor its essential properties based on their intended end applications. In this research work provides a review of magnesium-based composites with metal and mica reinforcements.Molybdenum is metal, with a notably high melting point of 2610°Cand it is widely used as an alloying element. This study investigates themicrostructural, mechanical and wear properties of magnesium nano-molybdenum composites synthesized using microwaves assisted powdermetallurgy. The metallic reinforcement was Molybdenum nanopowder withthe average particle size of 100nm. Effects of varying amount of nano-sizedmolybdenum particles on magnesium matrix were studied. Microstructuralstudies of extruded nanocomposites exhibited reasonably uniform distributionof molybdenum particles with presence of minor clusters. Thenanocomposite exhibited a slightly smaller grain size compared with the monolithic mg. Mechanical characterization of Mg/Mo nanocomposites showed improved microhardness, tensile and compressive strengths while newline