Effect of Crystallographic Orientation and Grain Boundaries on Martensitic Transformation and Superelastic Response of Oligocrystalline Fe–Mn–Al–Ni Shape Memory Alloys

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dc.date.accessioned2021-11-08T14:38:01Z
dc.date.available2021-11-08T14:38:01Z
dc.date.issued2021-07-26
dc.description.sponsorshipGefördert im Rahmen des Projekts DEALger
dc.description.sponsorshipDeutsche Forschungsgemeinschaft (project number 400008732)
dc.identifierdoi:10.17170/kobra-202110084857
dc.identifier.urihttp://hdl.handle.net/123456789/13369
dc.language.isoengeng
dc.relation.doidoi:10.1007/s40830-021-00340-3
dc.relation.projectidproject number 400008732
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectFeMnAlNieng
dc.subjectshape memory alloyseng
dc.subjectoligocrystalline structureeng
dc.subjectmartensitic phase transformationeng
dc.subjectcrystallographic orientationeng
dc.subjectdigital image correlationeng
dc.subjectgrain boundarieseng
dc.subject.ddc620
dc.subject.ddc660
dc.subject.swdMemory-Legierungger
dc.subject.swdMartensitumwandlungger
dc.subject.swdKristallstrukturger
dc.subject.swdKristallorientierungger
dc.subject.swdBildkorrelationger
dc.subject.swdKorngrenzeger
dc.titleEffect of Crystallographic Orientation and Grain Boundaries on Martensitic Transformation and Superelastic Response of Oligocrystalline Fe–Mn–Al–Ni Shape Memory Alloyseng
dc.typeAufsatz
dc.type.versionpublishedVersion
dcterms.abstractIn situ tensile tests employing digital image correlation were conducted to study the martensitic transformation of oligocrystalline Fe–Mn–Al–Ni shape memory alloys in depth. The influence of different grain orientations, i.e., near-〈001〉 and near-〈101〉, as well as the influence of different grain boundary misorientations are in focus of the present work. The results reveal that the reversibility of the martensite strongly depends on the type of martensitic evolving, i.e., twinned or detwinned. Furthermore, it is shown that grain boundaries lead to stress concentrations and, thus, to formation of unfavored martensite variants. Moreover, some martensite plates seem to penetrate the grain boundaries resulting in a high degree of irreversibility in this area. However, after a stable microstructural configuration is established in direct vicinity of the grain boundary, the transformation begins inside the neighboring grains eventually leading to a sequential transformation of all grains involved.eng
dcterms.accessRightsopen access
dcterms.creatorBauer, André
dcterms.creatorVollmer, Malte
dcterms.creatorNiendorf, Thomas
dcterms.source.identifiereissn:2199-3858
dcterms.source.issueIssue 3
dcterms.source.journalShape Memory and Superelasticityeng
dcterms.source.pageinfo373-382
dcterms.source.volumeVolume 7
kup.iskupfalse

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