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An Understanding of High Entropy Alloy from Phase Diagram Calculation



Fan Zhang, Chuan Zhang, Shuang-Lin Chen, J Zhu, Wei-Sheng Cao, Ursula R. Kattner


The concept of High Entropy Alloy (HEA) is understood from the point of view of phase diagram calculation. The role of entropy of mixing on the phase stability is discussed for both ideal and non-ideal solid solution phases. The relative stability of a solid solution phase and line compounds is illustrated using hypothetical systems. Calculated binary and multicomponent phase diagrams are used to explain the phenomena observed experimentally for HEAs. The potential of using the CALPHAD approach in aiding the design of alloys with multiple key components is also discussed.
Calphad-Computer Coupling of Phase Diagrams and Thermochemistry


Calphad, High Entry Alloy, Multicomponent Phase Diagram, Phase SStability, Thermodynamics


Zhang, F. , Zhang, C. , Chen, S. , Zhu, J. , Cao, W. and Kattner, U. (2013), An Understanding of High Entropy Alloy from Phase Diagram Calculation, Calphad-Computer Coupling of Phase Diagrams and Thermochemistry, [online], (Accessed March 1, 2024)
Created November 11, 2013, Updated October 12, 2021