Investigations on properties and tribological behavior of AlMg4.5Mn0.7(AA5083)-MoO 3 composites prepared by stir casting method

Abstract Molybdenum Trioxide (MoO 3 ) has received extensive consideration as a prospective reinforcement for metal matrix composites (MMCs) to improve the properties. The goal of this work is to fabricate and examine the properties of AA5083-MoO 3 composites. AA5083-MoO 3 composites by several weight percentages were produced via liquid metallurgy technique. The compositions of the composites are AA5083, AA5083-4wt.%MoO 3 , AA5083-8wt.%MoO 3 and AA5083-12wt.%MoO 3 . The microstructure inspection was made on the synthesized AA5083-MoO 3 composites using Scanning Electron Microscope (SEM). The effect of MoO 3 weight percentage on the properties such as density, porosity, mechanical and wear behavior were investigated. The SEM images expose the even dispersion of MoO 3 particles with AA5083 matrix. The combination of MoO 3 particles enhanced the properties of the composites. The wear behavior was examined via pin on disc apparatus at various process parameters wt.%, load, sliding velocity (V) and sliding distance. Trials were conducted as per L16 orthogonal array (OA). Optimum process parameters to acquire least wear rate and co-efficient of friction (COF) was done by Grey Relational Analysis (GRA). The ANOVA results exposes that wt.% is the major important parameter inducing wear and COF.