Phase transformation induced by lattice distortion in multiprincipal component CoCrFeNiCuxAl1−x solid-solution alloys

Abstract

Multicomponent solid-solution alloys actually form with most of lattice atoms in original elemental crystal being substituted by other component atoms. Thus, the regular lattice is destroyed and lattice distortion occurs. The classical homogeneous nucleation theory and the concept of fluctuating topology of atomic bonds described in terms of the atomic-level stresses could well explain why face-centered cubic (fcc) solid solution is superior to body-centered cubic (bcc) in forming in CrFeCoNiCu alloy and in the phase transformation from fcc of CrFeNiAl0.5Cu0.5 alloy to bcc of CrFeNiAl0.75Cu0.25 alloy.