The effect of pressure tuning on the structure and mechanical properties of high-entropy carbides

Shixue Guan; Weitong Lin; Hao Liang; Wenjia Liang; Yi Tian; Duanwei He; Fang Peng

doi:10.1016/j.scriptamat.2022.114755

Author(s)

Shixue Guan
Hao Liang
Wenjia Liang
Yi Tian
Duanwei He
Fang Peng

Related Research Unit(s)

Department of Mechanical Engineering

Detail(s)

Original language	English
Article number	114755
Journal / Publication	Scripta Materialia
Volume	216
Online published	22 Apr 2022
Publication status	Published - 15 Jul 2022

Link(s)

DOI	DOI https://doi.org/10.1016/j.scriptamat.2022.114755 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85129258599&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(f1461304-8798-47b5-b6c2-44bcef0fd73e).html

Abstract

High-purity (Ta_0.2Nb_0.2Hf_0.2Zr_0.2Ti_0.2)C high-entropy ceramics are successfully synthesized using high-pressure solid-phase reactions. The high-entropy phase formation route and the effect of pressure tuning on the structural and mechanical properties of the ceramics are systematically investigated. An interesting process is observed whereby a double phase high-entropy carbide is formed, followed by the defusing of one phase into another, and the eventual formation of a high-entropy phase. Moreover, an abnormal, pressure-induced enhancement of the bulk modulus and strength is observed, resulting from the crystal plane distortion in high-entropy carbides. These results reflect the unusual lattice distortion effects of continuous, pressure-induced tuning on the structure and properties of high-entropy carbides.

Research Area(s)

High-entropy carbides, High-pressure solid-state reaction, In-Situ high-pressure synchrotron radiation, Mechanical properties, Phase stability

Citation Format(s)

[ RIS ] [ BibTeX ]

The effect of pressure tuning on the structure and mechanical properties of high-entropy carbides. / Guan, Shixue; Lin, Weitong; Liang, Hao et al.
In: Scripta Materialia, Vol. 216, 114755, 15.07.2022.

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

Guan, S, Lin, W, Liang, H, Liang, W, Tian, Y, He, D & Peng, F 2022, 'The effect of pressure tuning on the structure and mechanical properties of high-entropy carbides', Scripta Materialia, vol. 216, 114755. https://doi.org/10.1016/j.scriptamat.2022.114755

Guan, S., Lin, W., Liang, H., Liang, W., Tian, Y., He, D., & Peng, F. (2022). The effect of pressure tuning on the structure and mechanical properties of high-entropy carbides. Scripta Materialia, 216, Article 114755. https://doi.org/10.1016/j.scriptamat.2022.114755

Guan S, Lin W, Liang H, Liang W, Tian Y, He D et al. The effect of pressure tuning on the structure and mechanical properties of high-entropy carbides. Scripta Materialia. 2022 Jul 15;216:114755. Epub 2022 Apr 22. doi: 10.1016/j.scriptamat.2022.114755

Guan, Shixue ; Lin, Weitong ; Liang, Hao et al. / The effect of pressure tuning on the structure and mechanical properties of high-entropy carbides. In: Scripta Materialia. 2022 ; Vol. 216.