Origin of properties in high entropy alloys

摘要: Abstract The novel class of alloys known as high entropy (HEAs) present two fundamental problems; 1) prediction their properties and reaction to alloying adjustments, 2) compositions capable forming the random solid solution with simple crystal structure that appears be key behaviour. Here DFT is applied model electronic HEAs based on CoCrFeNi pseudo base metal. This approach explains a number such preferred allows fundamental elastic moduli be calculated accurately. The stability discussed compared bulk metallic glasses composition produced which both a glassy solution phase. A thermodynamic proposed allow likely HEA identified. This modelling using thermodynamics used assess potential light metals. shows may predict properties therefore behaviour due free electron structure, it also suggests most important consideration in is lack strong covalent interactions, ie close zero mixing.