Phase Development in High Entropy Alloys as a Result of Interactions Between Constituent Elements

• Nil Kumar

  English

  Author

• Manohar Chopkar

  English

  Author

Many elements may be found in high entropy alloys (HEAs), with five or more main elements in an equiatomic or nearly equiatomic ratio,
together with or without minor elements. The name suggests that high mixing entropy is the only factor that determines whether HEAs form
solid solution alloys or phases, however other studies have shown that the mutual interaction between elements is a more impo rtant factor.
Based on the following factors: atomic size difference (δ), mixing entropy (ΔSmix), mixing enthalpy (ΔHmix), valence electron concentration
(VEC), and electronegativity difference (Δχ), this research proposes guidelines for alloy design in HEAs that aim to generate solid solution
phases. Additionally, the impact of an additional parameter Ω is covered. The parameter Ω is related to the enthalpy of mixing, which is a
function of both the time it takes for the components to melt and their average melting point. When these conditions are satisfied, a solid
solution phase will develop. Future advancements in HEAs will be greatly motivated by these parametric restrictions

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