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<p>This study aims to explore hybrid aluminium alloy composites specifically for automotive and aerospace applications. Here, we design and fabricate AA6061-Marble dust particulate (0 to 6 @ 1.5 wt.%) reinforced alloy composites via the stir-casting method, followed by evaluation of their physical, mechanical, and sliding wear performance. The morphology of worn surfaces was examined to assess the impact of sliding wear parameters on the specific wear rate and to investigate associated wear mechanisms. It was observed that developed composites show void contents in the range of 12.5% to 6.66%, diminishing with increasing reinforcement content, while mechanical properties such as tensile strength (238 ± 3.5 to 277 ± 6.1&#xa0;MPa), hardness (75 ± 3.0 to 90 ± 2.1 HRB), Impact strength (16.5 ± 2.5 to 21 ± 2.0&#xa0;kJ/m<sup>2</sup>), and flexural strength (180 ± 5.9 to 205 ± 5.51&#xa0;MPa) show an increasing trend with reinforcement content. The sliding wear rate remains in the range of 2.006 × 10<sup>–6</sup> to 2.528 × 10<sup>–6</sup> mm<sup>3</sup>/N-m<b>.</b> Taguchi's design of experiments methodology was adopted to optimize sliding-wear operating parameters with minimal wear as the objective, followed by ANOVA. Additionally, ranking analyses, such as hybrid AHP-TOPSIS and hybrid AHP-R, are used to validate the subjective findings. It is observed that 6 wt.% marble dust particulates are optimal for AA6061, i.e., M6 alloy composites exhibit the best overall performance metrics under investigation.</p>

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Mechanical and sliding wear performance analysis of AA6061 − marble particulates reinforced alloy composites via hybrid decision-making techniques

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年8月5日

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  • Ashiwani Kumar,
  • Mukesh Kumar

摘要

This study aims to explore hybrid aluminium alloy composites specifically for automotive and aerospace applications. Here, we design and fabricate AA6061-Marble dust particulate (0 to 6 @ 1.5 wt.%) reinforced alloy composites via the stir-casting method, followed by evaluation of their physical, mechanical, and sliding wear performance. The morphology of worn surfaces was examined to assess the impact of sliding wear parameters on the specific wear rate and to investigate associated wear mechanisms. It was observed that developed composites show void contents in the range of 12.5% to 6.66%, diminishing with increasing reinforcement content, while mechanical properties such as tensile strength (238 ± 3.5 to 277 ± 6.1 MPa), hardness (75 ± 3.0 to 90 ± 2.1 HRB), Impact strength (16.5 ± 2.5 to 21 ± 2.0 kJ/m2), and flexural strength (180 ± 5.9 to 205 ± 5.51 MPa) show an increasing trend with reinforcement content. The sliding wear rate remains in the range of 2.006 × 10–6 to 2.528 × 10–6 mm3/N-m. Taguchi's design of experiments methodology was adopted to optimize sliding-wear operating parameters with minimal wear as the objective, followed by ANOVA. Additionally, ranking analyses, such as hybrid AHP-TOPSIS and hybrid AHP-R, are used to validate the subjective findings. It is observed that 6 wt.% marble dust particulates are optimal for AA6061, i.e., M6 alloy composites exhibit the best overall performance metrics under investigation.