Investigation of the tribological behavior of 2D sinusoidal texture CoNiCrFeMn high-entropy alloy coating on Ni substrate

YH Li and QL Ma and XT Qiao and XL Yin and HC Yu and WB Wang and GQ Zhang, MATERIALS CHEMISTRY AND PHYSICS, 342, 130991 (2025).

DOI: 10.1016/j.matchemphys.2025.130991

Two-dimensional (2D) sinusoidal texture was applied to CoNiCrFeMn high entropy alloy (HEA) coating. The tribological behavior of HEA/Ni workpieces under different conditions was studied by molecular dynamics (MD) simulation. The friction behavior and influence mechanism of non- textured and textured workpieces under different conditions were compared. The results show that when the periodic parameter of the texture T = 30, the subsurface damage depth of the workpiece decreases, the internal dislocation strengthening decreases, resulting in the tangential force and normal force decrease, and the friction coefficient decreases. At the friction depths of 15 & Aring;, 20 & Aring;, and 25 & Aring;, the number of worn atoms decreases by 85.3 %, 73.4 %, and 65.85 %, respectively. In addition, the presence of texture improves the local temperature rise and shear strain accumulation caused by higher scratch velocity, resulting in uniform stress distribution during friction and improved wear resistance of the workpiece.

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