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<p>In this study, 10% Al<sub>2</sub>O<sub>3</sub> reinforced AA2024 aluminum alloy-based composite materials were produced by hot-pressing in a one-way axial mold under 50&#xa0;MPa pressure, at three different temperatures (500, 550 and 600°C) for 1&#xa0;hour. The microstructure, density, hardness, wear and corrosion properties of the produced composite materials were investigated. It was shown that the Al<sub>2</sub>O<sub>3</sub> reinforcement particles were homogeneously distributed in the aluminum matrix in all samples. The density and hardness values of composite materials increased with the increase of the hot-pressing temperature, and the wear volume loss significantly reduced. The increase in the compressibility of the composite powders and the increase in density at high hot-pressing temperatures were effective in the increase in hardness and wear resistance. The corrosion resistance of composite materials increased with increasing hot-pressing temperature. The decreasing of structural defects such as porosity and increasing in density improve corrosion resistance of the composite materials.</p>

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Investigation of the effects of hot-pressing temperature on density, hardness, wear and corrosion properties of Al2O3-AA2024 aluminum composites

  • 期刊论文

  • 发表日期：

    2025年3月24日

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  • Kubilay Karacif,
  • Hasan Karabulut

摘要

In this study, 10% Al2O3 reinforced AA2024 aluminum alloy-based composite materials were produced by hot-pressing in a one-way axial mold under 50 MPa pressure, at three different temperatures (500, 550 and 600°C) for 1 hour. The microstructure, density, hardness, wear and corrosion properties of the produced composite materials were investigated. It was shown that the Al2O3 reinforcement particles were homogeneously distributed in the aluminum matrix in all samples. The density and hardness values of composite materials increased with the increase of the hot-pressing temperature, and the wear volume loss significantly reduced. The increase in the compressibility of the composite powders and the increase in density at high hot-pressing temperatures were effective in the increase in hardness and wear resistance. The corrosion resistance of composite materials increased with increasing hot-pressing temperature. The decreasing of structural defects such as porosity and increasing in density improve corrosion resistance of the composite materials.