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On the Influence of Microstructure on the Corrosion Behavior of Fe–Mn–Al–Ni Shape Memory Alloy in 5.0 wt% NaCl Solution

dc.date.accessioned2021-07-26T11:53:57Z
dc.date.available2021-07-26T11:53:57Z
dc.date.issued2020-10-03
dc.identifierdoi:10.17170/kobra-202107204380
dc.identifier.urihttp://hdl.handle.net/123456789/13035
dc.description.sponsorshipGefördert im Rahmen des Projekts DEALger
dc.language.isoengeng
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectcorrosioneng
dc.subjectFe–Mn–Al–Nieng
dc.subjectiron-based shape memory alloyseng
dc.subjectNaCl solutioneng
dc.subjectopen circuit potentialeng
dc.subjectpotentiodynamic polarisationeng
dc.subject.ddc540
dc.subject.ddc600
dc.titleOn the Influence of Microstructure on the Corrosion Behavior of Fe–Mn–Al–Ni Shape Memory Alloy in 5.0 wt% NaCl Solutioneng
dc.typeAufsatz
dcterms.abstractHerein the corrosion behavior of Fe–Mn–Al–Ni shape memory alloys characterized by different microstructures in a 5.0 wt% NaCl solution is investigated. Open circuit potential and potentiodynamic polarisation tests are conducted. Generally, Fe–Mn–Al–Ni shows corrosion properties being similar to pure iron. However, the polarization curves of single crystals indicate the presence of an unstable passive system. The corrosion damage is analyzed by means of optical microscopy and electron microscopy. It is revealed that polycrystalline samples consisting of two different phases induced by heat treatment, i.e., α-phase and γ-phase or β-Mn phase and γ-phase, are suffering a selective corrosion attack of the α-phase and β-Mn–phase, respectively. On the contrary, the single crystal seems to form a protective layer on the surface. Upon presence of stress-induced martensite, a selective corrosion attack of γ′–martensite is observed.eng
dcterms.accessRightsopen access
dcterms.creatorFrenck, Johanna-Maria
dcterms.creatorVollmer, Malte
dcterms.creatorMandel, Marcel
dcterms.creatorKrüger, Lutz
dcterms.creatorNiendorf, Thomas
dc.relation.doidoi:10.1002/adem.202000865
dc.subject.swdKorrosionger
dc.subject.swdMemory-Legierungger
dc.subject.swdNatriumchloridger
dc.subject.swdPolarisationger
dc.type.versionpublishedVersion
dcterms.source.identifiereissn:1527-2648
dcterms.source.issueIssue 2
dcterms.source.journalAdvanced Engineering Materialseng
dcterms.source.volumeVolume 23
kup.iskupfalse
dcterms.source.articlenumber200865


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