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

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Published Dec 21, 2022
DOI https://doi.org/10.3221/IGF-ESIS.63.10

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Santhosh Gotagunaki
Department of Mechanical Engineering, B. M. S College of Engineering, Bengaluru-560019, India Department of Mechanical Engineering, Government Engineering College, Ramanagara, Karnataka- 562159, India
https://orcid.org/0000-0001-9947-8802 Vardhaman S. Mudakappanavar
Department of Mechanical Engineering, B. M. S College of Engineering, Bengaluru-560019, India
https://orcid.org/0000-0003-0831-5528 R. Suresh
Department of Mechanical Engineering, M.S. Ramaiah University of Applied Sciences, Bangalore--560058, India
https://orcid.org/0000-0002-6956-9751

Abstract

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

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    Issue
    Vol. 17 No. 63 (2023): January 2023
    Section
    Fractography and Advanced metallography

    How to Cite

    Gotagunaki, S., Mudakappanavar, V. S. and Suresh, R. (2022) “Investigation on Microstructure and Tensile Fractography of RE Oxides (CeO2/Y2O3) Reinforced AZ91D Magnesium Matrix Composites”, Frattura ed Integrità Strutturale, 17(63), pp. 100–109. doi: 10.3221/IGF-ESIS.63.10.
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