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<p>In materials engineering, advancing copper multi-principal element alloys with superior mechanical properties and wear resistance is crucial. This study introduces novel Al<sub>0.5</sub>Fe<sub>0.5</sub>NiSnCu<sub>x</sub> (x = 0.5, 0.75, 1.0, 1.25, 1.5 in mass fraction) high-entropy alloys and systematically explores how varying copper (Cu) content impacts their phase composition, microstructure, hardness, and wear resistance. Experimental results indicate that NiAl segregation phases occur when x ≠ 1. Specifically, tin-rich phases form when x &lt; 1, and copper-rich Cu<sub>3</sub>Sn and CuAl phases emerge when x &gt; 1. At x = 1, the alloy primarily consists of CuSn and CuAl phases. When x = 1.5, the alloy exhibits optimal overall properties: a compressive strength of 702&#xa0;MPa, a wear volume of 1.55 × 10<sup>−4</sup>&#xa0;mm<sup>3</sup>/N·m, a self-corrosion potential of −107&#xa0;mV, and a low corrosion current density of 2.94 × 10<sup>−9</sup>&#xa0;A/cm<sup>2</sup>. These excellent mechanical, wear-resistant, and anti-corrosive properties suggest potential applications in marine engineering and equipment.</p>

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The Structure and Wear-Resistance Study of Al0.5Fe0.5NiSnCux High-Entropy Alloys

  • 期刊论文

  • 发表日期：

    2026年5月9日

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  • Jiawei Xu,
  • Kejie Ding,
  • Zhongdao Yu,
  • Yiming Li,
  • Zhixiang Li

摘要

In materials engineering, advancing copper multi-principal element alloys with superior mechanical properties and wear resistance is crucial. This study introduces novel Al0.5Fe0.5NiSnCux (x = 0.5, 0.75, 1.0, 1.25, 1.5 in mass fraction) high-entropy alloys and systematically explores how varying copper (Cu) content impacts their phase composition, microstructure, hardness, and wear resistance. Experimental results indicate that NiAl segregation phases occur when x ≠ 1. Specifically, tin-rich phases form when x < 1, and copper-rich Cu3Sn and CuAl phases emerge when x > 1. At x = 1, the alloy primarily consists of CuSn and CuAl phases. When x = 1.5, the alloy exhibits optimal overall properties: a compressive strength of 702 MPa, a wear volume of 1.55 × 10−4 mm3/N·m, a self-corrosion potential of −107 mV, and a low corrosion current density of 2.94 × 10−9 A/cm2. These excellent mechanical, wear-resistant, and anti-corrosive properties suggest potential applications in marine engineering and equipment.