Superelastic anisotropy and meso-scale interface regions in textured NiTi sheets

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dc.authorid0000-0002-3595-5259
dc.contributor.authorElibol, Çağatay
dc.date.accessioned2022-01-10T06:11:08Z
dc.date.available2022-01-10T06:11:08Z
dc.date.issued2021
dc.departmentTAÜ, Fen Fakültesi, Malzeme Bilimi ve Teknolojileri Bölümüen_US
dc.description.abstractTypical manufacturing processes of NiTi shape memory alloys (SMAs) involve drawing and rolling operations leading to crystallographic texture and superelastic anisotropic behavior. Therefore, an in-depth understanding of directional material properties and underlying mechanisms may help to guide the production process to create suitable textures for applications requiring different mechanical properties. During stress-induced martensitic transformation (SIMT), macroscopic deformation occurs only in the mesoscale interface regions between fully martensitic and fully austenitic regions. In case of localized deformation, the detailed characterization of these transition regions is therefore of crucial practical importance. In this study, the effects of crystallographic texture and specimen geometry on mechanical/localized deformation behavior of polycrystalline NiTi superelastic sheets were systematically analyzed. Local surface strain fields are recorded during deformation by digital image correlation (DIC) in order to characterize interface regions in detail. The results show that the mechanical behavior has a clear directional dependency, and that the orientation/texture effect is reduced with decreasing width/thickness ratio of specimen. For different sample geometries and orientations, martensite/austenite interface has different angles which changes during SIMT. The results provide new insights into the interaction of crystallographic texture, SIMT characteristics, superelastic anisotropy and specimen geometry which is essential for engineering applications of NiTi.
dc.identifier.citationElibol, Ç. (2021). Superelastic anisotropy and meso-scale interface regions in textured NiTi sheets. JJournal of the Faculty of Engineering and Architecture of Gazi University, 36(4), 2121-2133.
dc.identifier.doi10.17341/gazimmfd.754732
dc.identifier.endpage2133en_US
dc.identifier.issn1300-1884
dc.identifier.issn1304-4915
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-85117824223
dc.identifier.scopusqualityQ2
dc.identifier.startpage2121en_US
dc.identifier.trdizinid494875
dc.identifier.urihttps://hdl.handle.net/20.500.12846/619
dc.identifier.volume36en_US
dc.identifier.wosWOS:000692521900026
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakTR-Dizin
dc.institutionauthorElibol, Çağatay
dc.language.isoen
dc.publisherGazı University Faculty Engineering Architecture
dc.relation.ispartofJournal of the Faculty of Engineering and Architecture of Gazi University
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectSuperelastic Anisotropyen_US
dc.subjectSMAsen_US
dc.subjectDICen_US
dc.subjectLocalization of SIMTen_US
dc.subjectSüperelastik Anizotropien_US
dc.subjectSuperelastische Anisotropieen_US
dc.titleSuperelastic anisotropy and meso-scale interface regions in textured NiTi sheets
dc.typeArticle

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