Mechanical Characterization of B4C-Gr Reinforced Al–Zn–Mg Alloy Hybrid Nanocomposites

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  • Kumar T.S. Krishna
    Department of Automobile Engineering, Madras Institute of Technology, Anna University
  • Kandavel Arunachalam
    Department of Automobile Engineering, Madras Institute of Technology, Anna University

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<p>The current study is an attempt made to synthesize nano B4C/Graphite reinforced Aluminum–Zinc–Magnesium alloy composites by altering the weight %age of B4C (2%, 4%, and 6%). SEM was used to examine the morphology and mechanical behaviour was done in accordance with ASTM standards (ASTM E8, E9, E23, and D790). The microstructure displays a nearly uniform dispersion of reinforcement particles in the matrix alloy, with no residual pore visible. From the XRD analysis it is identified that interfacial phases between the base material and ceramic strengthening particulates are identified as Al3BC, AlB12, Mg2Si, SiAl2 and it strive as strengthening mechanism of synthetic composites. The interfacial phases identified as Al3BC, AlB12, Mg2Si, and SiAl2, and serve as a strengthening mechanism for synthetic composites, according to XRD. When compared to the base material, intermixtures had higher hardness (28.07%), ultimate tensile strength (69.31%), compressive strength (18.58%). The flexural strength is improved (29.32%) due to higher dislocation density in the matrix and wider variations in the elastic modulus. The impact strength improved significantly (72%) due to a reduction in porosity and grain refinement.</p>

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  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 64 (5), 955-961, 2023-05-01

    公益社団法人 日本金属学会

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