Phase composition of AlxFeNiCrCo high entropy alloys prepared by sintering and arc-melting methods

Structural properties and phase compositions of AlxFeNiCrCo HEA have been studied experimentally in systematic way in order to test the alternative method of HEA sample preparation (sintering of pure metallic powders). Within two detected crystallographic structures, three phases with different stoichiometries were identified depending on x. The phase composition of sintered and melted samples are similiar, but the corresponding microstructures are different (dendritic structure for melted samples against large regular grains for sintered ones).342