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A novel and sustainable method to develop non-equiatomic CoCrFeNiMox high entropy alloys via spark plasma sintering using commercial commodity powders and evaluation of its mechanical behaviour

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dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Tecnología de Polvoses
dc.contributor.authorKumarán Venkatesh, S.
dc.contributor.authorGarbiec, Dariusz
dc.contributor.authorTorralba Castelló, José Manuel
dc.date.accessioned2024-01-25T08:43:37Z
dc.date.available2024-01-25T08:43:37Z
dc.date.issued2023-06-30
dc.description.abstractA novel approach to developing high entropy alloys (HEAs) using spark plasma sintering (SPS) was explored in this work where a mix of commercial commodity powders like Ni625, CoCrF75, and 316L was used instead of pre-alloyed powders avoiding the expensive pre-alloying steps like mechanical alloying or gas atomizing. Three non-equiatomic HEAs, based on Co, Cr, Fe, Ni, and Mo were designed and developed by blending the powders which were sintered via SPS and resulted in a single FCC phase after homogenization. The HEAs were microstructurally and mechanically characterized with tensile and hot compression tests up to a temperature of 750 degrees C showing excellent properties. The maximum room temperature tensile strength and ductility demonstrated was 712 MPa and 62% respectively, by the alloy Co23.28Cr28.57Fe25.03Ni21.01Mo2.1. Moreover, the same alloy exhibited a compression strength greater than 640 MPa with a ductility above 45% at a temperature of 750 degrees C. Also, this study paves the way for a novel fabrication route that offers more flexibility to develop new HEAs cost-effectively and efficiently which is crucial for the discovery of new materials over high-throughput techniques. Using such commodity alloys also opens the possibility of developing ingot casting from recycled scraps avoiding the direct use of critical metals.en
dc.description.sponsorshipAcknowledgements The authors would like to thank VDM Metals, Germany for providing the powders for free. This work was funded by IMDEA Materials Institute, Madrid, Spain.en
dc.description.statusPublicadoes
dc.format.extent10
dc.identifier.bibliographicCitationMaterials Science & Engineering A, (2023), 878, 145207en
dc.identifier.doihttps://doi.org/10.1016/j.msea.2023.145207
dc.identifier.issn0921-5093
dc.identifier.publicationtitleMaterials Science and Engineering: Aen
dc.identifier.publicationvolume878
dc.identifier.urihttps://hdl.handle.net/10016/39505en
dc.identifier.uxxiAR/0000033597
dc.language.isoengen
dc.publisherElsevier B.V.en
dc.rights© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Españaen
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/en
dc.subject.ecienciaQuímicaes
dc.titleA novel and sustainable method to develop non-equiatomic CoCrFeNiMox high entropy alloys via spark plasma sintering using commercial commodity powders and evaluation of its mechanical behaviouren
dc.typeresearch articleen
dc.type.hasVersionVoRen
dspace.entity.typePublication
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