Gibbs energy-composition plots as a tool for high-entropy alloy design

Guruvidyathri, K.; Murty, B.S.; Kumar, K.C. Hari

doi:10.1016/j.jallcom.2018.07.264

Cited by 26 publications

(5 citation statements)

References 17 publications

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“…The increase of the σ solvus to over 900˚C in the CrMnCoNi alloy clearly demonstrated that increasing the Fe concentration enhances the stability of the fcc matrix relative to the intermetallic σ phase. This placed the σ solvus of the CrMnCoNi alloy between 900 and 1000˚C, where the alloy it has been reported to be single phase fcc [37]. Furthermore, the presence of intra-and inter-granular σ phase precipitates, at both 700 and 900˚C in CrMnCoNi, supported the hypothesis of Ondicho et al [38], that abnormal grain coarsening was caused by the precipitation of a second phase.…”

Section: Effect Of Fe On Phase Stabilitysupporting

confidence: 66%

“…The Fe-free equiatomic alloy, CrMnCoNi, has been observed to form a single fcc phase following heat-treatment at 1000˚C for 24 h [37]. A CrMnFexCoNi alloy containing 50 at.% Fe (with other elements in equiatomic proportions), has also been reported to be single phase fcc after cold rolling and subsequent 0.5 h heat-treatments between 500-800˚C, and an extended 24 h exposure at 600˚C [14].…”

Section: Introductionmentioning

confidence: 99%

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The influence of Fe variations on the phase stability of CrMnFexCoNi alloys following long-duration exposures at intermediate temperatures

Bloomfield

Christofidou²,

Monni³

et al. 2021

Intermetallics

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Section: Effect Of Fe On Phase Stabilitysupporting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

The influence of Fe variations on the phase stability of CrMnFexCoNi alloys following long-duration exposures at intermediate temperatures

Bloomfield

Christofidou²,

Monni³

et al. 2021

Intermetallics

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“…As the sole technique of visualizing the phase diagram directly, the CALPHAD method that is expert in the composition and phase design for the multicomponent systems could serve as an equipped ship for the HEA researchers. Hundreds of published works have applied the CALPHAD method in the phase prediction of HEAs [16,17]. In this section, the advantage and limitations of the CALPHAD method will be discussed with several examples.…”

Section: Thermodynamic Calculations In the Composition And Phase Desi...mentioning

confidence: 99%

CALPHAD as a Toolbox to Facilitate the Development of HEAs

Wang¹,

Li²

2023

High Entropy Materials - Microstructures and Properties

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This chapter would be a comprehensive review of the successful application of the CALPHAD method in the research and development of high-entropy alloys (HEAs) in recent years. The structure of this chapter is obedient to the conventional framework in materials science, and several topics would be covered, including composition and structure design, heat treatment and solidification processing, and some properties and performances, such as mechanical and electrochemical corrosion behaviors and high-temperature oxidation characteristics. A conclusion and outlook of the CALPHAD method are also provided at the end of this chapter. Hope this chapter could offer a thermodynamic and kinetic perspective for facilitating the field of HEA research and inspire other researchers to contribute more valuable ideas and works.

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“…To make a detailed comparison with equilibrium structures, CoCrFeMnNiV HEA has also been synthesized by vacuum arc melting. Usage of binary Gibbs energy vs composition (G-x) plots, calculated using Calphad models, has been reported to be successful in understanding phase formation and stability in HEAs [14,15]. In the present study, such plots have been utilized for understanding phase formation in CoCrFeMnNiV HEA.…”

Section: Introductionmentioning

confidence: 97%