Powder metallurgy and high-entropy alloys: update on new opportunities

ABSTRACT

This article addresses the development of high-entropy alloys (HEAs) fabricated via Powder Metallurgy (PM) techniques. There are potential opportunities for PM techniques to produce ‘different’ HEAs and offer alternative routes to obtain special compositions. The potential for PM is vast, and the obtained properties are highly competitive with those from HEAs produced by ingot casting. Considerable work must still be done to provide the market with reasons to use PM instead of other processing routes. Since article [Torralba JM, Alvaredo P, García-Junceda A. High-entropy alloys fabricated via powder metallurgy. A critical review. Powder Metall. 2019;62(2), doi:10.1080/00325899.2019.1584454] was published in 2019, more than 100 research works have been issued on this topic. The objective of this paper is to provide an update on some of the new opportunities that have been proposed in the last months.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Notes on contributors

Professor José M. Torralba has published more than 500 scientific papers, has supervised 28 Ph.D. thesis and 90 Diploma Thesis. He has received many awards being Fellow of the American Powder Metallurgy Institute and the European Powder Metallurgy Association. He has been involved in 36 competitive projects (in regional, national and international frameworks), being the principal investigator in 26. He has managed several research grants with industries, including the Höganäs Chair in Powder Metallurgy. His main scientific interest and activity is related to Powder Metallurgy. He is Regional Editor of Journal of Materials Processing Technology and Metals. Editor in Chief (coeditor) of Powder Metallurgy.

Dr. Paula Alvaredo completed the degree of Chemistry at Universidad Autónoma de Madrid (UAM) and a Master Degree in Materials Science and Engineering at Universidad Carlos III de Madrid where she also obtained her Ph.D. in Materials Science and Engineering. Her activity is developed in the field of cermets and cemented carbides, high entropy alloys and Ti alloys. All of her main research lines are focused in Powder Metallurgy technology. Within the framework of Powder Metallurgy she has worked in the design of new compositions using thermodynamic simulation methods, characterisation of powders and consolidation by conventional PM routes and Additive Manufacturing techniques. During her career Paula Alvaredo has been involved in 12 international and national projects. She has published 17 scientific papers in peer-reviewed international journals and she has co-authored 40 presentations in international and national conferences.

Dr. Andrea García-Junceda is graduated in both Chemistry and Materials Engineering at the Complutense University of Madrid. Ph.D. in Materials Science and Technology from the same university in 2007. She is currently working in the Joint Research Centre (JRC) of the European Commission (The Netherlands), where she is mainly focused on the development of novel micromechanical tests in structural materials. She is coauthor of 29 journal publications. She has participated in 51 conferences and she has been involved in 15 research projects.

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.