High entropy alloys (HEAs) have gained significant attention due to their exceptional mechanical and tribological properties arising from their unique multi- principal element composition. This study focuses on the tribological behavior of an aluminum-based high entropy alloy (HEA), synthesized using advanced metallurgical techniques to ensure a homogeneous microstructure. Wear resistance and frictional characteristics were evaluated under various operational conditions, including different loads, sliding speeds, and environmental factors. The findings demonstrate excellent wear resistance and reduced friction, attributed to the synergistic effect of the constituent elements and the formation of a stable oxide layer during sliding. Microstructural analysis revealed the influence of solid solution strengthening and phase uniformity in enhancing tribological performance. These results highlight the potential of aluminum-based HEAs for applications in demanding environments, such as aerospace, automotive, and heavy-duty machinery, where superior wear resistance and durability are essential.

KEYWORDS:

• High entropy alloys (HEAs)
• Aluminum-based alloy
• Tribological behavior
• Wear resistance
• Frictional performance