A novel stress-induced martensitic transformation in a single-phase refractory high-entropy alloy

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

7 Scopus Citations
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Author(s)

  • Liang Wang
  • Tangqing Cao
  • Xudong Liu
  • Benpeng Wang
  • Ke Jin
  • Yaojian Liang
  • Lu Wang
  • Fuchi Wang
  • Jun Liang
  • Yunfei Xue

Detail(s)

Original languageEnglish
Pages (from-to)129-134
Journal / PublicationScripta Materialia
Volume189
Online published21 Aug 2020
Publication statusPublished - Dec 2020
Externally publishedYes

Abstract

High-entropy alloys (HEAs) provide a new perspective to design metastable alloys with the stress-induced martensitic transformation (SIMT) for overcoming the strength-ductility trade-off. Here, we report a novel SIMT, orthorhombic to hexagonal close-packed martensite, in a single orthorhombic refractory HEA (Ti16Zr35Hf35Ta14 RHEA), showing a good yield strength-ductility matching. The analysis of the elastic distortion energy (∆Eels) of Ti16Zr35Hf35Ta14 and several other RHEAs reveals that severe lattice distortion is a key factor which causes this SIMT. Combined the “d-electron alloy design” approach with the ∆Eels, the phase configuration and SIMT path in RHEAs can be well predicted. Our work brings new insights between the lattice distortion and SIMT of RHEAs, benefiting the metastable alloy development.

Research Area(s)

  • High energy X-ray diffraction, High-entropy alloys, Lattice distortion, Martensitic transformation, Phase stability

Citation Format(s)

A novel stress-induced martensitic transformation in a single-phase refractory high-entropy alloy. / Wang, Liang; Cao, Tangqing; Liu, Xudong; Wang, Benpeng; Jin, Ke; Liang, Yaojian; Wang, Lu; Wang, Fuchi; Ren, Yang; Liang, Jun; Xue, Yunfei.

In: Scripta Materialia, Vol. 189, 12.2020, p. 129-134.

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