Exceptionally low thermal conductivity in distorted high entropy alloy

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Detail(s)

Original languageEnglish
Pages (from-to)24-34
Journal / PublicationMaterials Research Letters
Volume13
Issue number1
Online published28 Oct 2024
Publication statusPublished - 2025

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DOI

DOI
Check@CityULib
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-85207880192&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(6e88fbc5-9635-4a37-896a-d8779a845d2c).html

Abstract

Recent investigations indicate that high entropy alloys (HEAs) may exhibit distinctive thermal characteristics compared to traditional alloys. Through a blend of experiments and atomistic simulations, this study showcases that the lattice thermal conductivity of a highly distorted single-phase B2 alloy with the composition of (CoNi)50(TiZrHf)50 is as low as less than 1 W/(m·K), akin to that of ceramics like alumina, and remains stable across temperatures from 300 to 900 K. This remarkable thermal behavior is attributed to significant lattice distortion and atomic mass variation within this alloy. These findings suggest potential applications for distorted HEAs in thermal insulation technologies tailored for challenging environments. © 2024 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

Research Area(s)

  • High entropy alloys, lattice distortion, phonon scattering, thermal conductivity

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Publication fingerprints text

100
High-Entropy Alloys Engineering
100
Low Thermal Conduct... Engineering
100
Thermal Conductivit... Material Science
100
High Entropy Alloys Material Science
33
Thermal Behavior Engineering
33
Lattice Distortion Engineering
33
Potential Applicati... Engineering
33
Aluminum Oxide Engineering
33
Thermal Insulation Engineering
33
Thermal Characteris... Engineering
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Citation Format(s)

[ RIS ] [ BibTeX ]
Exceptionally low thermal conductivity in distorted high entropy alloy. / Wang, Hang; Ma, Shihua; Zhao, Weijiang et al.
In: Materials Research Letters, Vol. 13, No. 1, 2025, p. 24-34.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review