Investigation on Microstructure and Tensile Fractography of RE Oxides (CeO2/Y2O3) Reinforced AZ91D Magnesium Matrix Composites

The current work aims to investigate the mechanical properties of rare oxide reinforced Mg alloy based MMCs. Magnesium matrix considered in study is AZ91D alloy, whereas earth oxides were CeO2 and Y2O3. Y2O3 particulate reinforcement percentage was varied from 1 3% steps 1% its influence on Stir casting route adopted fabricate sample for study. Microstructure analysis illustrated uniform distribution alloys. obtained results revealed enhanced such as tensile strength, yield elongation hardness MMCs due increased reinforcement. Fractography fracture surfaces demonstrated microcracks cleavage dominant pure alloy. While particle debonding, extensive plastics deformation prominent in-addition