Novel high entropy alloys as binder in cermets: From design to sintering

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Show simple item record Prieto Muñoz, Estela María Vaz-Romero, Álvaro Gonzalez Julian, J. Alvaredo Olmos, Paula 2022-01-12T11:02:07Z 2021-09
dc.identifier.bibliographicCitation Prieto, E., Vaz-Romero, A., Gonzalez-Julian, J., Guo, S. & Alvaredo, P. (2021). Novel high entropy alloys as binder in cermets: From design to sintering. International Journal of Refractory Metals and Hard Materials, 99, 105592.
dc.identifier.issn 0263-4368
dc.description.abstract In recent years a new group of alloys has emerged breaking with the classical alloying concepts of physical metallurgy, high entropy alloys (HEA). Their main characteristic is that these alloys present 4 or 5 main elements increasing the entropy of the system and favouring the formation of a single phase. The disordered solid solution leads to develop an alloy with improved properties, in particular high thermal stability, hardness and strength. These properties make this group of alloys attractive as potential candidates for alternative binders in hard materials. In this work, two new compositions have been designed with the aim of obtaining a single BCC phase, reducing the cost and minimizing the presence of critical elements using elements that can present good potential properties for a cermet and with low toxicity and price such as Al, Cr, Mo, Ni, Fe and Ti. The design has been made based on the composition calculation applying the HEA phase formation empirical rules from literature in combination with thermodynamic simulations by Calphad method. The viability of the compositions has been studied through the processing of the compositions by casting and the study of wettability and solubility at high temperature on the hard phase of TiCN. Once the chosen compositions have been validated as competitive binders, cermets have been consolidated by spark plasma sintering (SPS) and the influence of the compositions on the mechanical properties of the compound materials has been studied.
dc.description.sponsorship The current investigation was supported by the Regional Government of Madrid through the program ADITIMAT, ref. S2018/NMT-4411.
dc.format.extent 10
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2021 Elsevier Ltd. All rights reserved.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.subject.other High entropy alloys
dc.subject.other HEA
dc.subject.other Composition design
dc.subject.other Cermets
dc.subject.other Alternative binders
dc.subject.other Spark plasma sintering
dc.title Novel high entropy alloys as binder in cermets: From design to sintering
dc.type article
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.rights.accessRights embargoedAccess
dc.relation.projectID Comunidad de Madrid. S2018/NMT-4411
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 105592
dc.identifier.publicationlastpage 10
dc.identifier.publicationtitle International Journal of Refractory Metals and Hard Materials
dc.identifier.publicationvolume 99
dc.identifier.uxxi AR/0000028979
carlosiii.embargo.liftdate 2023-09-01
carlosiii.embargo.terms 2023-09-01
dc.contributor.funder Comunidad de Madrid
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