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<p>AlCuCrMoNi-based high-entropy alloy (HEA) coatings, incorporating additions of Al<sub>2</sub>O<sub>3</sub>, W, and WC, were successfully applied to titanium substrates using laser cladding. The morphological features of the coatings were analyzed using various microscopy techniques. Additionally, electron backscatter diffraction (EBSD) was utilized to investigate the crystallographic orientation, grain size, and phase distribution, offering comprehensive insights into the microstructural evolution of the material before and after tensile testing. The tensile strength of the HEA coating was measured at 221.45&#xa0;MPa. Incorporating reinforcements significantly altered these properties, with HEA + Al<sub>2</sub>O<sub>3</sub> exhibiting 317.23&#xa0;MPa, HEA + W demonstrating 345.18&#xa0;MPa, and HEA + WC showing 211.76&#xa0;MPa. Notably, the HEA + W coating achieved the highest ultimate tensile strength of 345.18&#xa0;MPa, a yield strength of 336.44&#xa0;MPa, and a fracture elongation of 36.75%. This indicates a superior tensile strength for the HEA + W coating when compared to the unreinforced HEA coating. After tensile deformation, the HEA + W coating exhibited a strong fiber texture, with slip on {111} planes as the primary deformation mechanism and W promoting uniform grain distribution. The HEA with WC showed the highest increase in misorientation angle, enhancing strain accommodation and grain boundary interactions. The coating exhibits improved tensile performance, making it promising for automotive applications.</p>

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Investigation on Mechanical Property of AlCuCrMoNi High-Entropy Alloy Coatings through Al2O3, W, and WC Reinforcement: A Comparative Analysis

  • 期刊论文

  • 发表日期：

    2026年4月2日

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  • R. Vishnu Ramesh Kumar,
  • N. Zeelanbasha,
  • T. Ramkumar,
  • M. Selvakumar,
  • P. Narayanasamy

摘要

AlCuCrMoNi-based high-entropy alloy (HEA) coatings, incorporating additions of Al2O3, W, and WC, were successfully applied to titanium substrates using laser cladding. The morphological features of the coatings were analyzed using various microscopy techniques. Additionally, electron backscatter diffraction (EBSD) was utilized to investigate the crystallographic orientation, grain size, and phase distribution, offering comprehensive insights into the microstructural evolution of the material before and after tensile testing. The tensile strength of the HEA coating was measured at 221.45 MPa. Incorporating reinforcements significantly altered these properties, with HEA + Al2O3 exhibiting 317.23 MPa, HEA + W demonstrating 345.18 MPa, and HEA + WC showing 211.76 MPa. Notably, the HEA + W coating achieved the highest ultimate tensile strength of 345.18 MPa, a yield strength of 336.44 MPa, and a fracture elongation of 36.75%. This indicates a superior tensile strength for the HEA + W coating when compared to the unreinforced HEA coating. After tensile deformation, the HEA + W coating exhibited a strong fiber texture, with slip on {111} planes as the primary deformation mechanism and W promoting uniform grain distribution. The HEA with WC showed the highest increase in misorientation angle, enhancing strain accommodation and grain boundary interactions. The coating exhibits improved tensile performance, making it promising for automotive applications.