Phase stability and tensile properties of Co-free Al 0.5CrCuFeNi2 high-entropy alloys

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

65 Scopus Citations
View graph of relations

Author(s)

  • Chun Ng
  • Sheng Guo
  • Junhua Luan
  • Qing Wang
  • Sanqiang Shi

Detail(s)

Original languageEnglish
Pages (from-to)530-537
Journal / PublicationJournal of Alloys and Compounds
Volume584
Online published25 Sep 2013
Publication statusPublished - 25 Jan 2014

Abstract

High-entropy alloys (HEAs) are becoming new research frontiers in the metallic materials field. The phase stability of HEAs is of critical significance, but a convincing understanding on it has been somewhat held back by the slow diffusion kinetics, which prevents the completion of diffusion assisted phase transformations toward the equilibrium state. Here a unique methodology, combining both the thermomechanical treatments and thermodynamic calculations, was employed to reveal the phase stability of HEAs, exemplified using the newly developed Al0.5CrCuFeNi2 alloy. The metastable nature of the solid solution phases in this high-entropy alloy was uncovered through thermomechanical treatments induced phase transformations, and supported by the thermodynamic calculations. Meanwhile, the tensile properties for both the as-cast and thermomechanically treated alloys were measured, and correlated to their indentation behavior. © 2013 Published by Elsevier B.V.

Research Area(s)

  • High entropy alloys, Indentation behavior, Phase stability, Tensile tests, Thermodynamics calculations, Thermomechanical treatments

Citation Format(s)

Phase stability and tensile properties of Co-free Al 0.5CrCuFeNi2 high-entropy alloys. / Ng, Chun; Guo, Sheng; Luan, Junhua; Wang, Qing; Lu, Jian; Shi, Sanqiang; Liu, C. T.

In: Journal of Alloys and Compounds, Vol. 584, 25.01.2014, p. 530-537.

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