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Improvement of Mechanical Properties with Non-Equimolar CrNbTaVW High Entropy Alloy

2022-02Journal article Open access
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dc.contributor.authorAntão, Francisco
dc.contributor.authorMartins, Ricardo
dc.contributor.authorCorreia, J.B.
dc.contributor.authorSilva, R.C. da
dc.contributor.authorGonçalves, António Pereira
dc.contributor.authorTejado, Elena
dc.contributor.authorPastor, Jose Ygnacio
dc.contributor.authorAlves, E.
dc.contributor.authorDias, Marta
dc.date.accessioned2022-05-20T14:27:51Z
dc.date.available2022-05-20T14:27:51Z
dc.date.issued2022-02
dc.description.abstractABSTRACT: CrNbTaVWx with (x = 1 and 1.7) high entropy alloys have been devised for thermal barriers between the plasma-facing tungsten tiles and the copper-based heat sink in the first wall of fusion nuclear reactors. These novel materials were prepared by ball milling and consolidated by Upgrade Field Assisted Sintering Technology at 1873 K under an applied pressure of 90 MPa for 10 min. In this work, the structural and mechanical properties of these materials were evaluated. Consolidated samples presented a major phase with a bcc-type structure with lattice parameter value of 0.316 nm for CrNbTaVW and CrNbTaVW1.7 compositions. Moreover, observation of the microstructures evidences also two minor phases: Ta-Nb-Cr and Ta-V rich (in which carbon is detected). Despite the similarity in the structural properties of these two alloys, their mechanical properties are distinct. The flexural stress for the sample with higher amount of W (CrNbTaVW1.7) is higher by 50% in the 298-873 K range, with an increased strain to fracture, which can be associated with reduced brittleness caused by the additional W incorporation.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAntão, Francisco... [et.al.] - Improvement of Mechanical Properties with Non-Equimolar CrNbTaVW High Entropy Alloy. In: Crystals, 2022, Vol. 12 (2), article nº 219pt_PT
dc.identifier.doi10.3390/cryst12020219pt_PT
dc.identifier.eissn2073-4352
dc.identifier.urihttp://hdl.handle.net/10400.9/3863
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationInstitute for Plasmas and Nuclear Fusion
dc.relationInstitute for Plasmas and Nuclear Fusion
dc.relation.publisherversionhttps://doi.org/10.3390/cryst12020219pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMechanical alloyingpt_PT
dc.subjectMechanical propertiespt_PT
dc.subjectThermal conductivitypt_PT
dc.subjectHigh entropy alloyspt_PT
dc.subjectMicrostructurept_PT
dc.titleImprovement of Mechanical Properties with Non-Equimolar CrNbTaVW High Entropy Alloypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleInstitute for Plasmas and Nuclear Fusion
oaire.awardTitleInstitute for Plasmas and Nuclear Fusion
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50010%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50010%2F2020/PT
oaire.citation.issue2pt_PT
oaire.citation.titleCrystalspt_PT
oaire.citation.volume12pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameMartins
person.familyNameCorreia
person.familyNameda Silva
person.familyNamePereira Gonçalves
person.familyNameTejado
person.familyNamePastor
person.familyNameAlves
person.familyNameDias
person.givenNameRicardo
person.givenNameJose B.
person.givenNameRui
person.givenNameAntonio
person.givenNameElena
person.givenNameJose Ygnacio
person.givenNameEduardo
person.givenNameMarta
person.identifier.ciencia-idC31C-D617-6377
person.identifier.ciencia-id1816-7461-553D
person.identifier.ciencia-id4D1A-2834-70FA
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person.identifier.ciencia-id0E13-5F70-9D8A
person.identifier.orcid0000-0001-7768-5704
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person.identifier.orcid0000-0003-3561-5999
person.identifier.orcid0000-0003-0633-8937
person.identifier.orcid0000-0001-6797-7711
person.identifier.ridAAD-3535-2020
person.identifier.ridB-2849-2008
person.identifier.scopus-author-id7202364148
person.identifier.scopus-author-id7202594379
person.identifier.scopus-author-id7102086109
person.identifier.scopus-author-id55837277500
person.identifier.scopus-author-id7201639528
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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