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<p>The present study deals with the fabrication of surface composites through reinforcement of a mixture of SiC + TiO within Al5083 alloy. The hybrid surface composite has been prepared by way of using cooling-assisted friction stir process (CAFSP). The microstructural analysis, estimation of scratch wear resistance, microhardness, and tensile properties of the composites have been carried out. The Al5083/(SiC + TiO<sub>2</sub> surface composite has demonstrated significant grain refinement at the surface, with a surface grain size coming down to 3&#xa0;µm from a high value of 72&#xa0;µm on the surface of the base alloy. This has enhanced scratch resistance. Surface roughness tests have exhibited minimal surface abnormalities, thereby maintaining a near constant roughness of 14.47&#xa0;µm, as in the base material. Scratch tests have revealed that the coefficient of friction (COF) for surface composites outperforms the base material; this improves wear resistance of the surface composite. Moreover, there has been significant improvement in the hardness value in the surface composite 109.9 ± 1.8 Hv against 68.24 ± 1.3 in base material) along with reduced scratch depth (29.39&#xa0;µm). SEM analysis demonstrates a superior wear resistance of the hybrid composite.</p>

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Scratch Wear Behavior of Hybrid Surface Composite Al5083/(SiC + TiO2) Produced Through Cooling-Assisted Friction Stir Processing Route

  • 期刊论文

  • 发表日期：

    2025年2月20日

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  • Vishal Bhojak,
  • Jinesh Kumar Jain,
  • Tejendra Singh Singhal,
  • M. K. Banerjee

摘要

The present study deals with the fabrication of surface composites through reinforcement of a mixture of SiC + TiO within Al5083 alloy. The hybrid surface composite has been prepared by way of using cooling-assisted friction stir process (CAFSP). The microstructural analysis, estimation of scratch wear resistance, microhardness, and tensile properties of the composites have been carried out. The Al5083/(SiC + TiO2 surface composite has demonstrated significant grain refinement at the surface, with a surface grain size coming down to 3 µm from a high value of 72 µm on the surface of the base alloy. This has enhanced scratch resistance. Surface roughness tests have exhibited minimal surface abnormalities, thereby maintaining a near constant roughness of 14.47 µm, as in the base material. Scratch tests have revealed that the coefficient of friction (COF) for surface composites outperforms the base material; this improves wear resistance of the surface composite. Moreover, there has been significant improvement in the hardness value in the surface composite 109.9 ± 1.8 Hv against 68.24 ± 1.3 in base material) along with reduced scratch depth (29.39 µm). SEM analysis demonstrates a superior wear resistance of the hybrid composite.