Large superplastic strain in non-modulated epitaxial Ni-Mn-Ga films

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dc.bibliographicCitation.firstPage162eng
dc.bibliographicCitation.volume10eng
dc.contributor.authorYeduru, S.R.
dc.contributor.authorBacken, A.
dc.contributor.authorFahler, S.
dc.contributor.authorSchultz, L.
dc.contributor.authorKohl, M.
dc.date.accessioned2020-08-13T10:35:52Z
dc.date.available2020-08-13T10:35:52Z
dc.date.issued2010
dc.description.abstractThe phase transformation and superplastic characteristics of free-standing epitaxial Ni-Mn-Ga stripes are reported. The stripes are prepared by micromachining a 1 μm thick Ni-Mn-Ga film sputter-deposited on a single crystalline MgO (100) substrate using optical lithography and a Chromium-based sacrificial layer technology. The stripes are oriented at angles of 0 and 45 degrees with respect to the Ni-Mn-Ga unit cell. Electrical resistance versus temperature characteristics reveal a reversible thermally induced phase transformation between 169°C and 191°C. Stress-strain measurements are performed with the stress applied along the [100]Ni-Mn-Ga as well as [110]Ni-Mn-Ga direction. Depending on the orientation, the twinning stress ranges between 25 and 30 MPa, respectively. For the [100] Ni-Mn-Ga and [110]Ni-Mn-Ga directions, superplastic behaviour with a strain plateau of 12 % and 4% are observed, respectively, indicating stress-induced reorientation of non-modulated martensite variants.eng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://doi.org/10.34657/4183
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/5554
dc.language.isoengeng
dc.publisherAmsterdam : Elseviereng
dc.relation.doihttps://doi.org/10.1016/j.phpro.2010.11.093
dc.relation.ispartofseriesPhysics Procedia 10 (2010)eng
dc.relation.issn1875-3884
dc.rights.licenseCC BY-NC-ND 3.0 Unportedeng
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/3.0/eng
dc.subjectEpitaxial Ni-Mn-Ga filmseng
dc.subjectMagnetic shape memory filmseng
dc.subjectSacrificial layer technologyeng
dc.subjectSuperplasticityeng
dc.subjectGalliumeng
dc.subjectGallium alloyseng
dc.subjectNickeleng
dc.subjectPhase transitionseng
dc.subjectPhotolithographyeng
dc.subjectShape memory effecteng
dc.subjectStress-strain curveseng
dc.subjectSuperplasticityeng
dc.subjectElectrical resistanceseng
dc.subjectMagnetic shape memoryeng
dc.subjectNi-Mn-Gaeng
dc.subjectSacrificial layereng
dc.subjectStress-induced reorientationeng
dc.subjectStress-strain measurementeng
dc.subjectSuperplastic strainseng
dc.subjectTemperature characteristiceng
dc.subjectManganeseeng
dc.subject.ddc530eng
dc.titleLarge superplastic strain in non-modulated epitaxial Ni-Mn-Ga filmseng
dc.typearticleeng
dc.typeTexteng
dcterms.bibliographicCitation.journalTitlePhysics Procediaeng
tib.accessRightsopenAccesseng
wgl.contributorIFWDeng
wgl.subjectPhysikeng
wgl.typeZeitschriftenartikeleng
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