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<p>In this study, FeCr<sub>x</sub>MnAlCu (x = 0, 0.5, 1.0, 1.5, 2.0) high-entropy alloys were prepared by the vacuum arc melting technique, and the mechanism of the influence of Cr content on the microstructure and mechanical properties of FeCrMnAlCu high-entropy alloys was systematically explored in combination with compression and friction wear experiments. The results show that the alloy has a BCC phase structure when the Cr content x = 0. When the Cr content x = 0.5–2.0, the alloy exhibits a mixed FCC+BCC two-phase structure. The compressive and yield strengths of the alloys increased with the increase of Cr content and reached the maximum values (1709 MPa and 1178 MPa) when x = 2.0, respectively. The alloy elongation reaches its maximum (21.1%) at x = 1.0. The types of wear of the FeCr<sub>x</sub>MnAlCu high-entropy alloy are adhesive, abrasive, and delamination wear. The alloy hardness increases with increasing Cr content, and the surface resistance to plastic deformation increases. The alloy reaches the highest hardness value and the lowest wear rate value, 415.4 HV and 0.996 × 10<sup>−5</sup> mm<sup>3</sup>N<sup>−1</sup>m<sup>−1</sup>, respectively, when the Cr content x = 2.0.</p>

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Study of the Organization and Properties of FeCrxMnAlCu High-Entropy Alloys

  • 期刊论文

  • 发表日期：

    2026年4月10日

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  • Xian Zhang,
  • Li Feng,
  • Jianjun Liu,
  • Kai Ma,
  • Yanchun Zhao,
  • Yajun Ling,
  • Ruilong Liu,
  • Xuan Fu

摘要

In this study, FeCrxMnAlCu (x = 0, 0.5, 1.0, 1.5, 2.0) high-entropy alloys were prepared by the vacuum arc melting technique, and the mechanism of the influence of Cr content on the microstructure and mechanical properties of FeCrMnAlCu high-entropy alloys was systematically explored in combination with compression and friction wear experiments. The results show that the alloy has a BCC phase structure when the Cr content x = 0. When the Cr content x = 0.5–2.0, the alloy exhibits a mixed FCC+BCC two-phase structure. The compressive and yield strengths of the alloys increased with the increase of Cr content and reached the maximum values (1709 MPa and 1178 MPa) when x = 2.0, respectively. The alloy elongation reaches its maximum (21.1%) at x = 1.0. The types of wear of the FeCrxMnAlCu high-entropy alloy are adhesive, abrasive, and delamination wear. The alloy hardness increases with increasing Cr content, and the surface resistance to plastic deformation increases. The alloy reaches the highest hardness value and the lowest wear rate value, 415.4 HV and 0.996 × 10−5 mm3N−1m−1, respectively, when the Cr content x = 2.0.