TITLE:
The Story of High Entropy Alloys: From the Immiscible to the Miscible States in Alloys—The Entropy versus the Enthalpy Alloys
AUTHORS:
Swe-Kai Chen
KEYWORDS:
EE-Plane, Pseudo-Unitary Lattice (PUL), High Entropy Alloy Four Effects, Entropy Alloys, Enthalpy Alloys, Solubility, Solid Solution
JOURNAL NAME:
Journal of Modern Physics,
Vol.16 No.1,
January
17,
2025
ABSTRACT: The role of entropy and enthalpy plays an essential key for the formation of an alloy. This paper illustrates how an alloy is to form and what and why the properties of the alloy are going to have by the entropy and enthalpy effects via a designed enthalpy-entropy plane (EE-plane) based on the Gibbs free energy equation and the introducing a charactering pseudo-unitary lattice (PUL) for entropy alloys. Based on the PUL scheme, the so-called four effects in high entropy alloys are simply nothing but the entropy effect with the other three accompanying effects: the distortion, slow diffusion and cocktail effects.