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High-entropy functional materials

Published online by Cambridge University Press:  20 September 2018

Michael C. Gao ,
Daniel B. Miracle ,
David Maurice ,
Xuehui Yan ,
Yong Zhang  and
Jeffrey A. Hawk
Michael C. Gao*
Affiliation:
National Energy Technology Laboratory, Materials Engineering and Manufacturing Directorate, Albany, Oregon 97321, USA; and AECOM, Albany, Oregon 97321, USA
Daniel B. Miracle
Affiliation:
AF Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433, USA
David Maurice
Affiliation:
National Energy Technology Laboratory, Materials Engineering and Manufacturing Directorate, Albany, Oregon 97321, USA
Xuehui Yan
Affiliation:
The State Key Laboratory of Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 10083, People’s Republic of China
Yong Zhang
Affiliation:
The State Key Laboratory of Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 10083, People’s Republic of China
Jeffrey A. Hawk
Affiliation:
National Energy Technology Laboratory, Materials Engineering and Manufacturing Directorate, Albany, Oregon 97321, USA
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

While most papers on high-entropy alloys (HEAs) focus on the microstructure and mechanical properties for structural materials applications, there has been growing interest in developing high-entropy functional materials. The objective of this paper is to provide a brief, timely review on select functional properties of HEAs, including soft magnetic, magnetocaloric, physical, thermoelectric, superconducting, and hydrogen storage. Comparisons of functional properties between HEAs and conventional low- and medium-entropy materials are provided, and examples are illustrated using computational modeling and tuning the composition of existing functional materials through substitutional or interstitial mixing. Extending the concept of high configurational entropy to a wide range of materials such as intermetallics, ceramics, and semiconductors through the isostructural design approach is discussed. Perspectives are offered in designing future high-performance functional materials utilizing the high-entropy concepts and high-throughput predictive computational modeling.

Keywords

magnetic propertiesthermoelectricsuperconducting
Type
Invited Review
Information
Journal of Materials Research , Volume 33 , Issue 19: Focus Issue: Fundamental Understanding and Applications of High-Entropy Alloys , 14 October 2018 , pp. 3138 - 3155
Copyright
Copyright © Materials Research Society 2018 

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Footnotes

b)

These authors were editors of this journal during the review and decision stage. For the JMR policy on review and publication of manuscripts authored by editors, please refer to http://www.mrs.org/editor-manuscripts/.

This section of Journal of Materials Research is reserved for papers that are reviews of literature in a given area.

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