Tsakiropoulos, P. orcid.org/0000-0001-7548-3287 (2022) Refractory metal intermetallic composites, high-entropy alloys, and complex concentrated alloys : a route to selecting substrate alloys and bond coat alloys for environmental coatings. Materials, 15 (8). 2832.
Abstract
This paper considers metallic ultrahigh-temperature materials (UHTMs) and the alloying behaviour and properties of alloys and their phases by using maps of the parameters δ (based on atomic size), Δχ (based on electronegativity), and valence electron concentration (VEC), and discusses what connects and what differentiates material groups in the maps. The formation of high-entropy or complex concentrated intermetallics, namely 5-3 silicides, C14 Laves and A15 compounds, and bcc solid solutions and eutectics in metallic UHTMs and their co-existence with “conventional” phases is discussed. The practicality of maps for the design/selection of substrate alloys is deliberated upon. The need for environmental coatings for metallic UHTMs was considered and the design of bond coat alloys is discussed by using relevant maps.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 The Author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
Keywords: | high-entropy alloys; complex concentrated alloys; refractory metal intermetallic composites; high-entropy intermetallics; complex concentrated intermetallics; alloy design |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Funding Information: | Funder Grant number Engineering and Physical Sciences Research Council EP/H500405/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 19 May 2022 12:49 |
Last Modified: | 19 May 2022 12:49 |
Status: | Published |
Publisher: | MDPI AG |
Refereed: | Yes |
Identification Number: | 10.3390/ma15082832 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:187080 |