Pathways towards grain boundary engineering for improved structural performance in polycrystalline Co-Ni-Ga shape memory alloys

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dc.date.accessioned2024-05-31T12:18:56Z
dc.date.available2024-05-31T12:18:56Z
dc.date.issued2018
dc.descriptionThis version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections.eng
dc.identifierdoi:10.17170/kobra-2024052910234
dc.identifier.urihttp://hdl.handle.net/123456789/15795
dc.language.isoeng
dc.relation.doidoi:10.1007/s40830-018-00204-3
dc.rightsUrheberrechtlich geschützt
dc.rights.urihttps://rightsstatements.org/page/InC/1.0/
dc.subjectHigh-temperature shape memory alloys (HT-SMAs)eng
dc.subjectgrain boundaryeng
dc.subjectgrain boundary engineeringeng
dc.subjectstructural degradationeng
dc.subjectCo-Ni-Gaeng
dc.subject.ddc600
dc.subject.ddc660
dc.subject.swdMemory-Legierungger
dc.subject.swdHochtemperaturger
dc.subject.swdKorngrenzeger
dc.subject.swdDegradation <Technik>ger
dc.subject.swdCobaltlegierungger
dc.subject.swdNickellegierungger
dc.subject.swdGalliumlegierungger
dc.titlePathways towards grain boundary engineering for improved structural performance in polycrystalline Co-Ni-Ga shape memory alloyseng
dc.typeAufsatz
dc.type.versionacceptedVersion
dcterms.abstractCo-Ni-Ga high-temperature shape memory alloys attracted a lot of scientific attention due to their superior functional material properties in recent years. In the single crystalline state Co-Ni-Ga HT-SMAs feature a good pseudoelastic response up to 500°C. However, in the polycrystalline condition Co-Ni-Ga suffers significant grain constraints and premature fracture at grain boundaries. In this regard, crystallographic orientation of the grain being involved as well as morphology and geometrical orientation of the grain boundaries with respect to the loading direction under pseudoelastic deformation is expected to be of crucial importance. Therefore, this study addresses the structural integrity of engineered grain boundaries, i.e. specifically selected grain boundaries in terms of orientation, grain boundary morphology and crystallographic grain orientation of adjacent grains. Mechanical testing combined with in situ methods and post mortem scanning electron microscopy investigations are used to shed light on the prevailing microstructural features resulting in any kind of structural degradation.eng
dcterms.accessRightsopen access
dcterms.creatorLauhoff, Christian
dcterms.creatorVollmer, Malte
dcterms.creatorKrooß, Philipp
dcterms.creatorKireeva, Irina V.
dcterms.creatorChumlyakov, Yuriy I.
dcterms.creatorNiendorf, Thomas
dcterms.source.identifiereissn:2199-3858
dcterms.source.issueIssue 1
dcterms.source.journalShape Memory and Superelasticityeng
dcterms.source.pageinfo73-83
dcterms.source.volumeVolume 5
kup.iskupfalse

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