Increasing utilization of high entropy alloys (HEAs) in different engineering applications, especially in the automotive industry because of their unique properties as they combine two contradictory properties, namely, high ductility and high strength had led to the need for deep knowledge about the manufacture and properties of those alloys. In this study, microstructure, hardness, adhesion, and wear resistance of low alloy steel AISI (4140) by electro-deposition of medium and high entropy alloys thin films were study.All of the elements were completely co-depositing, according to the energy dispersive spectrometry examination (EDS). The film made up of compact and homogenous particles, according to field emission scanning electron microscopy (FESEM) investigation. In comparison to medium entropy alloys (MEA) coatings, as-deposited HEA coatings had a granular morphology that grew finer and more compact. The existence of a combination of BCC and FCC phases, with a proportion of the FCC phase, discovered during structural characterization. In comparison with MEAs sample coated, HEA deposit has higher in both wear resistance and adhesion strength.

High Entropy Alloy, Medium-Entropy Alloys, Electrodeposition, Coating, Wear Resistance