uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Empirical design of single phase high-entropy alloys with high hardness
Show others and affiliations
2015 (English)In: Intermetallics (Barking), ISSN 0966-9795, Vol. 58, 1-6 p.Article in journal (Refereed) Published
Abstract [en]

We collect the available basic properties of nearly 100 high-entropy alloys (HEAs) with a single face centered cubic (fcc) or body centered cubic (bcc) phase. HEAs crystallizing in the fcc structure are mainly composed of the late 3d elements (LTM-HEAs), whereas HEAs consisting of the early (refractory) transition elements and the LTM-HEAs containing an increased level of bcc stabilizer form the bcc structure. Guided by the solid solution theory, we investigate the structure and hardness of HEAs as a function of the valence electron concentration (VEC) and the atomic size difference (delta). The fcc structure is found for VEC between 7.80 and 9.50, whereas the structure is bcc for VEC between 4.33 and 7.55. High strength is obtained for an average valence electron number VEC similar to 6.80 and for an average atomic size difference delta approximate to 6%. Based on these empirical correlations, one can design the high-entropy alloys with desired hardness. (C) 2014 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
2015. Vol. 58, 1-6 p.
Keyword [en]
High-entropy alloys, Valence electron concentration, Atomic size difference, Hardness
National Category
Physical Sciences Metallurgy and Metallic Materials
URN: urn:nbn:se:uu:diva-246330DOI: 10.1016/j.intermet.2014.10.010ISI: 000348626600001OAI: oai:DiVA.org:uu-246330DiVA: diva2:794142
Available from: 2015-03-10 Created: 2015-03-05 Last updated: 2015-03-10Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Vitos, Levente
By organisation
Materials Theory
In the same journal
Intermetallics (Barking)
Physical SciencesMetallurgy and Metallic Materials

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 537 hits
ReferencesLink to record
Permanent link

Direct link