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dc.rights.licenseAttribution 4.0 International
dc.contributor.authorGordo Burgoa, Olaia
dc.contributor.otherArmendariz, Lorea
dc.contributor.otherCastrillejo, Lucia
dc.contributor.otherVicario, Iban
dc.contributor.otherGuraya, Teresa
dc.date.accessioned2024-02-02T08:53:14Z
dc.date.available2024-02-02T08:53:14Z
dc.date.issued2024
dc.identifier.issn1879-3312
dc.identifier.otherhttps://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=176495
dc.identifier.urihttps://hdl.handle.net/20.500.11984/6227
dc.description.abstractTo develop new corrosion-resistant materials for structural applications, CrMnFeCoNiAlx high-entropy alloys (HEAs) are produced via semi-industrial induction casting. The study aimed to investigate the influence of Al content (x = 0–0.3) on both microstructure evolution and corrosion properties of the alloys. X-ray diffraction and scanning electron microscopy (SEM) analysis revealed that all the alloys exhibited a single-phase face-centered cubic structure, with dendritic (Fe, Co, Cr-rich) and interdendritic (Mn, Ni, Al-rich) regions distinguished by elemental segregations. Furthermore, the incorporation of Al atoms into the solid solution led to an increase in the lattice parameter, indicating alloy strengthening. The corrosion resistance of the CrMnFeCoNiAlx alloy improved with higher Al addition. Electrochemical polarisation tests demonstrated a slight increase in the corrosion potential (Ecorr) and a significant decrease in the corrosion current density (icorr) upon Al addition. Additionally, slower kinetics for pit nucleation (higher E'corr) were observed, particularly notable for x = 0.3. Analysis of the corroded surfaces revealed a mixed degradation mechanism, involving pitting corrosion and selective dissolution of the interdendritic zone, which decreased as the Al content of the HEA increased. These findings underscore the effectiveness of Al addition in not only enhancing the mechanical properties of the Cantor alloy through solid solution strengthening, but also improving its corrosion resistance.
dc.language.isoeng
dc.publisherElsevier
dc.rights© 2024 The Authors
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectCrMnFeCoNiAlx
dc.subjectHigh-entropy alloy
dc.subjectAl addition
dc.subjectInduction casting
dc.subjectMicrostructure
dc.subjectCorrosion properties
dc.titleInfluence of Al addition on microstructure and electrochemical behaviour of CrMnFeCoNi high-entropy alloy
dcterms.accessRightshttp://purl.org/coar/access_right/c_abf2
dcterms.sourceMaterials Chemistry and Physics
local.contributor.groupSistemas electrónicos de potencia aplicados al control de la energía eléctrica
local.description.peerreviewedtrue
local.identifier.doihttps://doi.org/10.1016/j.matchemphys.2024.129316
local.contributor.otherinstitutionhttps://ror.org/000xsnr85
local.contributor.otherinstitutionhttps://ror.org/02fv8hj62
local.source.detailsVol. 318. N. art. 129316. 1 May, 2024
oaire.format.mimetypeapplication/pdf
oaire.file$DSPACE\assetstore
oaire.resourceTypehttp://purl.org/coar/resource_type/c_6501
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85


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