Atomic-scale homogenization in an fcc-based high-entropy alloy via severe plastic deformation

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

10 Scopus Citations
View graph of relations

Author(s)

  • Hao Yuan
  • Ming-Hung Tsai
  • Gang Sha
  • Fan Liu
  • Zenji Horita
  • Jing Tao Wang

Detail(s)

Original languageEnglish
Pages (from-to)15-23
Journal / PublicationJournal of Alloys and Compounds
Volume686
Online published30 May 2016
Publication statusPublished - 25 Nov 2016
Externally publishedYes

Abstract

The atomic-scale homogenization of a face-centered-cubic-based high-entropy alloy (HEA), Al0.3Cu0.5CoCrFeNi, using severe plastic deformation (SPD) is reported. Atom probe tomography revealed that water quenching from high temperature cannot produce a homogeneous single phase, and clustering of Cu, Al and Ni still exists. Subsequent processing by high-pressure torsion produced nanostructured non-equilibrium single phase with homogeneous elemental distribution at atomic scale. Importantly, such a non-equilibrium single phase is stable at room temperature due to the sluggish diffusion kinetics. These observations suggest that SPD is an effective approach for producing single-phase HEAs for fundamental studies and applications.

Research Area(s)

  • Atom probe tomography, High-entropy alloy, High-pressure torsion, Homogenization, Severe plastic deformation (SPD)

Citation Format(s)

Atomic-scale homogenization in an fcc-based high-entropy alloy via severe plastic deformation. / Yuan, Hao; Tsai, Ming-Hung; Sha, Gang; Liu, Fan; Horita, Zenji; Zhu, Yuntian; Wang, Jing Tao.

In: Journal of Alloys and Compounds, Vol. 686, 25.11.2016, p. 15-23.

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