High-Energy Ball Milling and Spark Plasma Sintering of the CoCrFeNiAl High-Entropy Alloy
А. С. Рогачев, Nicholas A. Kochetov, Anna V. Panteleeva, Kirill Kuskov, D. Yu. Kovalev, А. С. Щукин, С. Г. Вадченко, Yury B. Scheck
Abstract
Nanocrystalline powder of the CoCrFeNiAl high-entropy alloy was produced by high-energy ball milling (HEBM) and consolidated by spark plasma sintering (SPS). Microstructure and crystal structure transformations occurring in the course of HEBM and SPS processes were explored by Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) and X-Rays Diffraction (XRD) methods. Synthesized materials showed a microhardness of 4000–6000 MPa and electrical resistivity of 0.2 mΩ⋅cm at room temperature.
Topics & Concepts
Spark plasma sinteringMaterials scienceBall millNanocrystalline materialMicrostructureAlloyScanning electron microscopeIndentation hardnessEnergy-dispersive X-ray spectroscopySinteringMetallurgyElectrical resistivity and conductivityDiffractionComposite materialNanotechnologyOpticsEngineeringElectrical engineeringPhysicsHigh Entropy Alloys StudiesHigh-Temperature Coating BehaviorsAdvanced materials and composites