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.

Phase stability

High entropy alloys

Indentation behavior

Tensile tests

Thermodynamics calculations

Thermomechanical treatments

Författare

C Ng

Sheng Guo

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

J. Luan

Q. Wang

J. Lu

C. Liu

Journal of Alloys and Compounds

0925-8388 (ISSN)

Vol. 584 530-537

Ämneskategorier

Metallurgi och metalliska material

Styrkeområden

Materialvetenskap

DOI

10.1016/j.jallcom.2013.09.105

Mer information

Skapat

2017-10-08