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<p>This study explores using melon husk ash (MHA) in an AA6063 aluminum matrix through stir casting to improve mechanical and corrosion properties. Composites with 0–25 wt% MHA were made and analyzed. Hardness increased from 29.2 HRB (0% MHA) to 37.1 HRB (25% MHA), a 27% improvement, due to MHA particles restricting dislocation motion. Wear rates dropped from 1.68% (control) to 1.21% (25% MHA). Electrochemical tests in 1&#xa0;M HCl showed corrosion rates decreased from 1.24&#xa0;mm/yr (control) to 0.47&#xa0;mm/yr (25% MHA) at 30&#xa0;°C, with polarization resistance rising by 42.5%. Statistical optimization identified 25% MHA at 30&#xa0;°C as optimal for minimal corrosion. Microstructural analysis confirmed uniform MHA dispersion and protective film formation. The study demonstrates MHA’s potential as a sustainable reinforcement for high-performance aluminum composites.</p>

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Evaluating Failure Mechanics of Light Weight Multiphase Melon Husk Ash Integrated Aluminium Alloy: Structural Evolution, Corrosion, Wear and Microhardness Performance

  • 期刊论文

  • 发表日期：

    2026年3月6日

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  • Ugbede A. Williams,
  • Ojo S. I. Fayomi

摘要

This study explores using melon husk ash (MHA) in an AA6063 aluminum matrix through stir casting to improve mechanical and corrosion properties. Composites with 0–25 wt% MHA were made and analyzed. Hardness increased from 29.2 HRB (0% MHA) to 37.1 HRB (25% MHA), a 27% improvement, due to MHA particles restricting dislocation motion. Wear rates dropped from 1.68% (control) to 1.21% (25% MHA). Electrochemical tests in 1 M HCl showed corrosion rates decreased from 1.24 mm/yr (control) to 0.47 mm/yr (25% MHA) at 30 °C, with polarization resistance rising by 42.5%. Statistical optimization identified 25% MHA at 30 °C as optimal for minimal corrosion. Microstructural analysis confirmed uniform MHA dispersion and protective film formation. The study demonstrates MHA’s potential as a sustainable reinforcement for high-performance aluminum composites.