Wear Resilience Characteristics of 2% Silicon Nitride Strengthened AZ31 Magnesium Composite

To develop magnesium matrix composites, ceramic silicon nitride (Si3N4) particles are used to strengthen the magnesium (AZ31) matrix by adding 2 wt.%. The composite is developed by disintegrated melt deposition vacuum stir casting method. Microstructural studies reveal the presence of Si3N4 particles and their uniform distribution. A L9 orthogonal array planned using Taguchi’s experimental design is chosen for three wear parameters axial load (AL), rotational speed (RS), and time duration (TD) for trials as per G99 standard in pin-on-disc apparatus. Experimental outcomes show a rise in axial stress; wear loss increases dramatically. Because the area of contact shrinks as sliding speed increases, wear loss diminishes dramatically. When the AL is low, CoF increases, and when the AL is large, CoF drops. When the sliding speed is increased, CoF decreases. To optimize multiple responses effectively, the TOPSIS method (Technique for Order of Preference by Similarity to Ideal Solution) was used. This approach helped pinpoint the best set of parameters for the magnesium composite reinforced with 2% Si3N4. According to the analysis, the ideal combination turned out to be a 10 N A), a RS of 275 rpm, and a TD of 500 seconds. According to the results of the ANOVA study, the contribution of AL and RS is higher. Abrasive and adhesion wear mechanism is observed from the worn-out surface micrographs