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dc.contributor.authorBiesuz, Mattia
dc.contributor.authorSaunders, Theo G.
dc.contributor.authorVeverka, Jakub
dc.contributor.authorBortoloti, Mauro
dc.contributor.authorVontorová, Jiřina
dc.contributor.authorVilémová, Monika
dc.contributor.authorReece, Michael J.
dc.date.accessioned2021-10-13T13:34:49Z
dc.date.available2021-10-13T13:34:49Z
dc.date.issued2021
dc.identifier.citationScripta Materialia. 2021, vol. 203, art. no. 114091.cs
dc.identifier.issn1359-6462
dc.identifier.issn1872-8456
dc.identifier.urihttp://hdl.handle.net/10084/145320
dc.description.abstractMultielement, high entropy carbides are a new class of refractory materials typically manufactured by solid-state synthesis. Although high entropy alloys are usually produced by solidification of a melt, the solidification of high entropy carbides has not been investigated to date. Herein, we report the first arc melting study of the solidification microstructures of the Zr-Nb-Hf-Ta-C-x system. The results highlight the presence of elemental segregation in interdendritic regions whose composition depends on the carbon load (i.e., the composition of the primary solidification phase changes with the amount of carbon in the melt). Duplex microstructures containing two distinct multielement carbides, possessing hardness as high as 30 GPa, are obtained. Interestingly, under certain conditions, there is a perfect "crystallographic continuity"(no grain boundaries and cell parameter variations) between the two phases, though their composition differs. Arc melting produces new and exotic microstructures not observed in materials processed in the solid state.cs
dc.language.isoencs
dc.publisherElseviercs
dc.relation.ispartofseriesScripta Materialiacs
dc.relation.urihttps://doi.org/10.1016/j.scriptamat.2021.114091cs
dc.rights© 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.cs
dc.subjectrefractory carbidescs
dc.subjecthigh entropy carbidescs
dc.subjectarc meltingcs
dc.subjecthigh entropy ceramicscs
dc.subjectsolidificationcs
dc.titleSolidification microstructures of multielement carbides in the high entropy Zr-Nb-Hf-Ta-Cx system produced by arc meltingcs
dc.typearticlecs
dc.identifier.doi10.1016/j.scriptamat.2021.114091
dc.type.statusPeer-reviewedcs
dc.description.sourceWeb of Sciencecs
dc.description.volume203cs
dc.description.firstpageart. no. 114091cs
dc.identifier.wos000681318400011


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