Wear resistant CoCrFeMnNi0.8V high entropy alloy with multi length-scale hierarchical microstructure
S. González, Athanasios K. Sfikas, Spyros Kamnis, C.G. Garay-Reyes, A. Macias, R. Martínez-Sánchez
Abstract
This work shows a CoCrFeMnNi0.8V high entropy alloy (HEA) with multiple length-scale hierarchical microstructure, obtained upon cooling at ∼62.5 K/s, consisting of a dominant globular sigma phase, FCC matrix and V-rich particles. The novel microstructure, never reported before for the CoCrFeMnNiV system, results in about a fourfold and sixfold increase of hardness and wear resistance, respectively, compared to that of CoCrFeMnNi alloy.
Topics & Concepts
MicrostructureAlloyMaterials scienceLength scaleMetallurgyMechanicsPhysicsHigh Entropy Alloys StudiesHigh-Temperature Coating BehaviorsAdvanced materials and composites