Effect of valence electron concentration on stability of fcc or bcc phase in high entropy alloys

Guo, Sheng; Ng, Chun; Lu, Jian; Liu, C. T.

doi:10.1063/1.3587228

Cited by 2,911High Entropy Alloys StudiesIntermetallics and Advanced Alloy PropertiesMetallic Glasses and Amorphous Alloys

Effect of valence electron concentration on stability of fcc or bcc phase in high entropy alloys

Guo, Sheng, Ng, Chun, Lu, Jian, Liu, C. T.·2011·Journal of Applied Physics

DOI 10.1063/1.3587228

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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.

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The intermediate VEC range of 6.87-8 corresponds to mixed phases of FCC and BCC.
“The intermediate VEC range of 6.87 -8 corresponds to mixed phases of FCC and BCC 37 -39 .”
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Authors: Guo, S., Ng, C., Lu, J., & Liu, C. T.
Affiliations: Hong Kong Polytechnic University (HK)
City University of Hong Kong 2 College of Science and Engineering, , Kowloon, Hong Kong
ORCID: Guo, Sheng
Liu, C. T.
Venue: Journal of Applied Physics
Publisher: AIP Publishing
Published: 2011-05-15
Volume: 109
Issue: 10
ISSN: 0021-8979 (ISSN-L)
1089-7550
DOI: 10.1063/1.3587228
OpenAlex: W1991258650
Cited by: 2,911
References: 28
Citations by year: 2026: 347 · 2025: 423 · 2024: 406 · 2023: 346 · 2022: 335 · 2021: 254 · 2020: 182 · 2019: 173 · 2018: 138 · 2017: 83 · 2016: 76 · 2015: 67 · 2014: 39 · 2013: 31 · 2012: 10
FWCI: 45.92
Type: journal article
Language: en
Open access: closed
Locations: Journal of Applied Physics (publishedVersion)
PolyU Institutional Research Archive (Hong Kong Polytechnic University) (submittedVersion)
Chalmers Research (Chalmers University of Technology) (submittedVersion)
Topics: Physical Sciences › Engineering › Mechanical Engineering › High Entropy Alloys Studies
Physical Sciences › Engineering › Mechanical Engineering › Intermetallics and Advanced Alloy Properties
Physical Sciences › Engineering › Mechanical Engineering › Metallic Glasses and Amorphous Alloys
Keywords: high-entropy alloys, phase stability, valence electron concentration, FCC solid solution, BCC solid solution, excess enthalpy, solid solution formation, alloy design, thermodynamic properties

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Effect of valence electron concentration on stability of fcc or bcc phase in high entropy alloys

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