Effect of energy density on the microstructure and properties of the CrFeCoNiNb high-entropy cladded layer

A synergistic combination of mechanical properties and corrosion resistance property is desired for most ocean engineering structural applications. In this paper, we prepared a high-entropy alloy (HEA) cladded layer composition CrFeCoNiNb (atomic %). We aim to attain balance between the by adjusting energy density. The with an density 116.7 J/mm2 exhibited excellent high resistance. improved are attributed fine grain strengthening, solid solution dispersion strengthening. Whereas, due formation Laves corrosion-resistant phase structure compact passivation film. variation different densities composition. proportion decreases first then increases increase density, which main reason that microhardness follows similar trend. outcome our research suggests could be explored realize surface strengthening load-bearing parts in marine equipment.