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Influence of Cr on the quaternary FeTaTiW medium entropy alloy

2025-04Journal article Open access
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datacite.subject.fosEngenharia e Tecnologia::Engenharia dos Materiais
datacite.subject.sdg12:Produção e Consumo Sustentáveis
dc.contributor.authorMartins, Ricardo
dc.contributor.authorMonteiro, Bernardo
dc.contributor.authorPereira Gonçalves, Antonio
dc.contributor.authorCorreia, Jose B.
dc.contributor.authorGalatanu, Andrei
dc.contributor.authorAlves, Eduardo
dc.contributor.authorTejado, Elena
dc.contributor.authorPastor, Jose Ygnacio
dc.contributor.authorDias, Marta
dc.date.accessioned2025-10-03T10:28:12Z
dc.date.available2025-10-03T10:28:12Z
dc.date.issued2025-04
dc.description.abstractABSTRACT: The search for advanced materials has been growing, and high entropy alloys (HEAs) are emerging as promising candidates for application in the fusion domain. This work investigates the effect of Cr on the FeTaTiW medium entropy alloy to form (CrFeTaTi)70W30 high entropy alloy, comparing the experimental production and characterization with the simulation (molecular dynamics and hybrid molecular dynamics-Monte Carlo) of the phases formed. The alloys were produced by mechanical alloying and sintered by spark plasma sintering. Both simulations have shown that a body-centered cubic structure is formed for both compositions. Monte Carlo simulation provides a more precise prediction of microstructural formation and element segregation. Microstructural examination of the consolidated material revealed the presence of a W-rich phase and a Ti-rich phase, consistent with the phase separation observed in the MC simulations. Moreover, X-ray diffraction analysis of the milled powder for FeTaTiW and (CrFeTaTi)70W30 confirmed the formation of a bcc (body-centered cubic)-type structure with a low fraction of intermetallic phases. Mechanical testing showed ductile behavior at 1000 degrees C where (CrFeTaTi)70W30 showed a stress magnitude almost double that of FeTaTiW. Additionally, the thermal diffusivity between 20 and 1000 degrees C of both alloys increases as the temperature rises. (CrFeTaTi)70W30 exhibits an increase from 3 to 5 mm2/s, while FeTaTiW increases from 4 to 9 mm2/s. Still, both system's thermal diffusivity values are lower than those of CuCrZr and pure tungsten. Despite this, the study underscores the promising attributes of HEAs and highlights areas for further optimization to enhance its suitability for extreme conditions.eng
dc.identifier.citationMartins, R., Monteiro, B. , Gonçalves, A. P., Correia, J. B., Galatanu, A., Alves, E., Tejado, E., Pastor, J. Y. & Dias, M. (2025). Influence of Cr on the quaternary FeTaTiW medium entropy alloy. In: Journal of Materials Science: Materials in Engineering, 2025, vol. 20 (1), article 52. https://doi.org/10.1186/s40712-025-00256-1
dc.identifier.doi10.1186/s40712-025-00256-1
dc.identifier.eissn3004-8958
dc.identifier.urihttp://hdl.handle.net/10400.9/6086
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer Nature
dc.relationInstitute for Plasmas and Nuclear Fusion
dc.relationImplementation of activities described in the Roadmap to Fusion during Horizon Europe through a joint programme of the members of the EUROfusion consortium
dc.relation.hasversionhttps://link.springer.com/article/10.1186/s40712-025-00256-1
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectHigh entropy alloys
dc.subjectMolecular dynamics simulation
dc.subjectMonte Carlo simulation
dc.subjectThermal properties
dc.subjectMechanical properties
dc.titleInfluence of Cr on the quaternary FeTaTiW medium entropy alloyeng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleInstitute for Plasmas and Nuclear Fusion
oaire.awardTitleImplementation of activities described in the Roadmap to Fusion during Horizon Europe through a joint programme of the members of the EUROfusion consortium
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50010%2F2020/PT
oaire.awardURIhttp://hdl.handle.net/10400.9/6085
oaire.citation.issue1
oaire.citation.titleJournal of Materials Science: Materials in Engineering
oaire.citation.volume20
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamEURATOM Action Grant Budget-Based
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameMartins
person.familyNameMonteiro
person.familyNamePereira Gonçalves
person.familyNameCorreia
person.familyNameGalatanu
person.familyNameAlves
person.familyNameTejado
person.familyNamePastor
person.familyNameDias
person.givenNameRicardo
person.givenNameBernardo
person.givenNameAntonio
person.givenNameJose B.
person.givenNameAndrei
person.givenNameEduardo
person.givenNameElena
person.givenNameJose Ygnacio
person.givenNameMarta
person.identifier.ciencia-id4D1A-2834-70FA
person.identifier.ciencia-idC31C-D617-6377
person.identifier.ciencia-id7911-8653-3CF4
person.identifier.ciencia-id0E13-5F70-9D8A
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person.identifier.orcid0000-0001-6434-365X
person.identifier.orcid0000-0003-2640-3038
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person.identifier.orcid0000-0003-0633-8937
person.identifier.orcid0000-0002-5240-6702
person.identifier.orcid0000-0003-3561-5999
person.identifier.orcid0000-0001-6797-7711
person.identifier.ridB-2849-2008
person.identifier.scopus-author-id7102086109
person.identifier.scopus-author-id7202364148
person.identifier.scopus-author-id35415989000
person.identifier.scopus-author-id55837277500
person.identifier.scopus-author-id7201639528
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
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