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HIGH TEMPERATURE TRIBOLOGICAL BEHAVIOR OF STIR-CAST Al–TiB2 METAL MATRIX COMPOSITES

Author

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  • SUSWAGATA PORIA

    (Department of Mechanical Engineering, Jadavpur University, Kolkata 700032, India)

  • GOUTAM SUTRADHAR

    (Department of Mechanical Engineering, Jadavpur University, Kolkata 700032, India)

  • PRASANTA SAHOO

    (Department of Mechanical Engineering, Jadavpur University, Kolkata 700032, India)

Abstract

This study considers high temperature tribological behavior of Al-TiB2 aluminum matrix composites (AMCs) fabricated through stir cast method. Effect of operating temperature on wear and friction behavior is studied for four different weight percentages of reinforcements using a high-temperature tribo-tester over a temperature range of 50∘C–250∘C under normal load in the range of 25–75N. Surface morphology and wear debris are studied through scanning electron microscopy (SEM) images. Energy dispersive X-ray (EDAX) and X-ray diffraction (XRD) studies are performed to observe the wear mechanism at high temperature. Increase in the amount of reinforcement improves wear resistance of composites at all temperatures. Friction and rate of wear are found to increase with operating temperature. Formation of oxide layers and softening of the surface are found to play crucial role in controlling the tribological behavior of stir cast Al–TiB2 composites at high operating temperatures.

Suggested Citation

  • Suswagata Poria & Goutam Sutradhar & Prasanta Sahoo, 2018. "HIGH TEMPERATURE TRIBOLOGICAL BEHAVIOR OF STIR-CAST Al–TiB2 METAL MATRIX COMPOSITES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 25(08), pages 1-18, December.
    • Handle: RePEc:wsi:srlxxx:v:25:y:2018:i:08:n:s0218625x18501226
    DOI: 10.1142/S0218625X18501226
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    Keywords

    AMC; TiB2; wear; friction; high temperature;
    All these keywords.

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