Abstract
Phase stability is an important topic for high entropy alloys (HEAs), but the understanding to it is very limited. The capability to predict phase stability from fundamental properties of constituent elements would benefit the alloy design greatly. The relationship between phase stability and physicochemical/thermodynamic properties of alloying components in HEAs was studied systematically. The mixing enthalpy is found to be the key factor controlling the formation of solid solutions or compounds. The stability of fcc and bcc solid solutions is well delineated by the valance electron concentration (VEC). The revealing of the effect of the VEC on the phase stability is vitally important for alloy design and for controlling the mechanical behavior of HEAs.
Keywords
High entropy alloysAlloyValence electronMaterials scienceThermodynamicsEnthalpySolid solutionPhase (matter)Entropy (arrow of time)Enthalpy of mixingChemical stabilityValence (chemistry)ElectronMetallurgyChemistryPhysics
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Publication Info
- Year
- 2011
- Type
- article
- Volume
- 109
- Issue
- 10
- Citations
- 2552
- Access
- Closed
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Cite This
Sheng Guo,
Chun Ng,
Jian Lü
et al.
(2011).
Effect of valence electron concentration on stability of fcc or bcc phase in high entropy alloys.
Journal of Applied Physics
, 109
(10)
.
https://doi.org/10.1063/1.3587228
Identifiers
- DOI
- 10.1063/1.3587228