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The Story of High Entropy Alloys: From the Immiscible to the Miscible States in Alloys—The Entropy versus the Enthalpy Alloys
Center for General Education, Tsing Hua College, National Tsing Hua University (NTHU), Hsinchu
- 1 Center for General Education, Tsing Hua College, National Tsing Hua University (NTHU), Hsinchu
Journal of Modern Physics·Volume 16 (2025)·Pages 1–5·Published 17 January 2025·DOI10.4236/jmp.2025.161001
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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.
KeywordsEE-PlanePseudo-Unitary Lattice (PUL)High Entropy Alloy Four EffectsEntropy AlloysEnthalpy AlloysSolubilitySolid Solution
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