Mechanical Behavior and Characterization of Stir Casted AZ31-CaSiO3 Metal Matrix Composites

Metal Matrix Composites (MMCs) are widely used in many engineering applications nowadays and play a key role, especially AZ31 magnesium alloy got much importance due to its specific characteristics suitable for both Engineering and Biomedical fields. In this work, MMCs with the pure AZ31 Magnesium alloy as matrix and Calcium silicate (CaSiO3 ) as reinforcement were developed with a bottom pouring type stir casting machine in argon gas inert atmosphere. The percentage of CaSiO3 has been increased from 2% to 8% in steps of 2% by weight. The microstructural analysis, X-ray diffraction (XRD) analysis and hardness tests have been performed and found that the reinforcement has been observed as CaSiO3 , which is distributed throughout the volume of the samples, no new phase or impurities were identified in the composites and composite with 98% AZ31 with 2% CaSiO3 reveals better hardness values compared with other prepared composites.