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Characterization of NbC-Reinforced AA7075 Alloy Composites Produced Using Friction Stir Processing

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Abstract

Aluminium alloy AA7075 matrix composites reinforced with varying vol% (5, 10 and 15 vol%) of niobium carbide (NbC) were fabricated by friction stir processing. Micrographs revealed that a homogeneous dispersion of NbC in the AA7075 matrix had no interfacial reaction. Significant degree of grain refinement was observed in the composites due to dynamic recrystallization and pinning effect of NbC particles. Hardness and tensile strength of AA7075 matrix were found to be enhanced by the addition of NbC particles. The fracture surface of the tensile-tested samples revealed deep dimples indicating a good ductility.

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Authors and Affiliations

  1. Department of Metallurgical Engineering, PSG College of Technology, Coimbatore, Tamilnadu, 641004, India

    T. Satish Kumar, K. Krishna Kumar & R. Subramanian

  2. Department of Physics, PSG College of Technology, Coimbatore, Tamilnadu, 641 004, India

    S. Shalini

  3. Department of Mechanical Engineering, Coimbatore Institute of Technology, Coimbatore, Tamil Nadu, India

    G. Suganya Priyadharshini

Authors
  1. T. Satish Kumar
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  2. G. Suganya Priyadharshini
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  3. S. Shalini
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  4. K. Krishna Kumar
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  5. R. Subramanian
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Correspondence to T. Satish Kumar.

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Satish Kumar, T., Suganya Priyadharshini, G., Shalini, S. et al. Characterization of NbC-Reinforced AA7075 Alloy Composites Produced Using Friction Stir Processing. Trans Indian Inst Met 72, 1593–1596 (2019). https://doi.org/10.1007/s12666-019-01566-7

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  • DOI: https://doi.org/10.1007/s12666-019-01566-7

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