Phase stability and tensile properties of Co-free Al 0.5CrCuFeNi2 high-entropy alloys
Artikel i vetenskaplig tidskrift, 2014

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.

High entropy alloys

Phase stability

Thermodynamics calculations

Thermomechanical treatments

Tensile tests

Indentation behavior


C Ng

Hong Kong Polytechnic University

Sheng Guo

City University of Hong Kong

J. Luan

City University of Hong Kong

University of Science and Technology Beijing

Q. Wang

City University of Hong Kong

J. Lu

City University of Hong Kong

Shuobo Shi

Hong Kong Polytechnic University

C. Liu

City University of Hong Kong

Journal of Alloys and Compounds

0925-8388 (ISSN)

Vol. 584 530-537


Metallurgi och metalliska material





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