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

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

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

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number114755
Journal / PublicationScripta Materialia
Volume216
Online published22 Apr 2022
Publication statusPublished - 15 Jul 2022

Abstract

High-purity (Ta0.2Nb0.2Hf0.2Zr0.2Ti0.2)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)

The effect of pressure tuning on the structure and mechanical properties of high-entropy carbides. / Guan, Shixue; Lin, Weitong; Liang, Hao; Liang, Wenjia; Tian, Yi; He, Duanwei; Peng, Fang.

In: Scripta Materialia, Vol. 216, 114755, 15.07.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review