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<p>Aluminum alloy AA6061 is broadly adopted in automobile, avionic, marine, military, plus telecommunication industries on account of its excellent specific strength and deterioration resistance. However, its limited wear resistance restricts its broader application in high-friction environments. This study investigates the influence of lanthanum oxide (La<sub>2</sub>O<sub>3</sub>) nanoparticles as reinforcement on the mechanical as well as wear traits of AA6061. Compounds were fabricated via stir casting followed by extrusion, with La<sub>2</sub>O<sub>3</sub> weight fractions ranging from 0.5 to 1.5&#xa0;wt.%. Hardness, tensile strength, wear rate, and coefficient of friction (COF) were evaluated at both casting and extrusion stages, and the results showed that extrusion significantly improved the composite properties. The AA6061/1.5&#xa0;wt.% La<sub>2</sub>O<sub>3</sub> composite exhibited a hardness of 171 HV, a 25.7% increase compared to the cast condition, while the tensile strength improved by 48.4% to 386&#xa0;MPa. The wear rate was reduced by 42.8% to 0.4 × 10<sup>−3</sup>&#xa0;mm<sup>3</sup>/m, and wear resistance increased by 74.8% to 2.5&#xa0;m/mm<sup>3</sup> after extrusion. Additionally, the COF decreased by 7.6% to 0.39 in the extruded composite. These findings confirm that the incorporation of La<sub>2</sub>O<sub>3</sub> nanoparticles, combined with extrusion, significantly enhances the mechanical strength and wear resistance of AA6061, making it a promising material for high-performance applications.</p>

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Mechanical and Wear Behavior of AA6061 Aluminum Alloy Filled with La2O3 Nanoparticles Fabricated by Casting and Extrusion Processes for Industrial Applications

  • 期刊论文

  • 发表日期：

    2026年1月28日

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  • M. Arun,
  • M. Muthukumaran,
  • S. Balasubramanian,
  • J. Bensam Raj

摘要

Aluminum alloy AA6061 is broadly adopted in automobile, avionic, marine, military, plus telecommunication industries on account of its excellent specific strength and deterioration resistance. However, its limited wear resistance restricts its broader application in high-friction environments. This study investigates the influence of lanthanum oxide (La2O3) nanoparticles as reinforcement on the mechanical as well as wear traits of AA6061. Compounds were fabricated via stir casting followed by extrusion, with La2O3 weight fractions ranging from 0.5 to 1.5 wt.%. Hardness, tensile strength, wear rate, and coefficient of friction (COF) were evaluated at both casting and extrusion stages, and the results showed that extrusion significantly improved the composite properties. The AA6061/1.5 wt.% La2O3 composite exhibited a hardness of 171 HV, a 25.7% increase compared to the cast condition, while the tensile strength improved by 48.4% to 386 MPa. The wear rate was reduced by 42.8% to 0.4 × 10−3 mm3/m, and wear resistance increased by 74.8% to 2.5 m/mm3 after extrusion. Additionally, the COF decreased by 7.6% to 0.39 in the extruded composite. These findings confirm that the incorporation of La2O3 nanoparticles, combined with extrusion, significantly enhances the mechanical strength and wear resistance of AA6061, making it a promising material for high-performance applications.