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Fabrication and Characterization of Metal-High Entropy Alloy Composites

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Abstract

The scope of the present study is focused on high-entropy alloy (HEA), a new type of alloy system-reinforced aluminium metal matrix composite (AMMC) development. The novel metal–metal composite is fabricated through powder metallurgy by reinforcing prepared AlCoCrCuFe HEA particles with aluminium. Headed for identifying the effect of HEA on aluminium, weight percentage of HEA is varied from 0 to 15% with an equal interval of 3%. By using X-ray diffractometer, phase constituents of HEA and Al base material are analysed besides the fact that the scanning electron microscope is utilized for morphology analysis of HEA particles and AMMC. Density of the aluminium increases gradually with the increase in HEA content due to higher density of reinforcements, and maximum micro-hardness of 71.3 HV is attained for 15% HEA reinforcement addition which is 37.6 HV for unreinforced aluminium. Among the various predictive methodologies, the density and hardness of Al–AlCoCrCuFe metal–metal composite are found close to the values predicted by the Reuss and Voigt model, respectively. Decrease in wear rate was found for aluminium MMC with the increase in HEA reinforcement addition.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Anna University Regional Campus Coimbatore, Coimbatore, 641046, India

    K. Soorya Prakash, M. Purusothaman & M. Sasikumar

  2. Department of Mechanical Engineering, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, 641 021, India

    P. M. Gopal

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  1. K. Soorya Prakash
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  2. P. M. Gopal
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  3. M. Purusothaman
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  4. M. Sasikumar
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Correspondence to P. M. Gopal.

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Soorya Prakash, K., Gopal, P.M., Purusothaman, M. et al. Fabrication and Characterization of Metal-High Entropy Alloy Composites. Inter Metalcast 14, 547–555 (2020). https://doi.org/10.1007/s40962-019-00383-4

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