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Guidelines in predicting phase formation of high-entropy alloys

Published online by Cambridge University Press:  23 April 2014

Y. Zhang ,
Z.P. Lu ,
S.G. Ma ,
P.K. Liaw ,
Z. Tang ,
Y.Q. Cheng  and
M.C. Gao
Y. Zhang*
Affiliation:
State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
Z.P. Lu
Affiliation:
State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
S.G. Ma
Affiliation:
Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
P.K. Liaw
Affiliation:
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996
Z. Tang
Affiliation:
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996
Y.Q. Cheng
Affiliation:
Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
M.C. Gao
Affiliation:
National Energy Technology Laboratory, Albany, Oregon 97321; URS Corporation, P.O. Box 1959, Albany, Oregon 97321
*
Address all correspondence to Y. Zhang at[email protected]
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Abstract

With multiple elements mixed at equal or near-equal molar ratios, the emerging, high-entropy alloys (HEAs), also named multi-principal elements alloys (MEAs), have posed tremendous challenges to materials scientists and physicists, e.g., how to predict high-entropy phase formation and design alloys. In this paper, we propose some guidelines in predicting phase formation, using thermodynamic and topological parameters of the constituent elements. This guideline together with the existing ones will pave the way toward the composition design of MEAs and HEAs, as well as property optimization based on the composition–structure–property relationship.

Type
Research Letters
Information
MRS Communications , Volume 4 , Issue 2 , June 2014 , pp. 57 - 62
Copyright
Copyright © Materials Research Society 2014 

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