Determination of formability characteristics of Crofer 22 APU sheets as interconnector for solid oxide fuel cells

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dc.contributor.authorTimurkutluk B.
dc.contributor.authorToros S.
dc.contributor.authorOnbilgin S.
dc.contributor.authorKorkmaz H.G.
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2018
dc.departmentNiğde ÖHÜ
dc.description.abstractIn this study, the general formability characteristics of Crofer® 22 APU sheets of different thicknesses (0.2 mm–1.0 mm) are experimentally investigated via tensile, out of plane, Erichsen, cupping and springback tests for a possible application for solid oxide fuel cells in sheet form unlike the conventional bulk form. Holloman equation is also used to fit the experimental stress-strain curves and the anisotropic behavior of the material is considered by determining Lankford parameters. The tensile test results show that the formability is about 0.29 mm/mm for 0.2 mm thick sheets, indicating the suitability of these sheets for the fabrication of interconnectors by a stamping process with desired channel geometry having dimensions similar to conventional channel dimensions. In addition, for a specific combination of process parameters such as blank holder force and lubrication, the formability can be enhanced as proven by Erichsen and cupping test results. Moreover, the formability is found to increase with increasing the sheet thickness and highly anisotropic behavior is observed. In three point bending tests, the negative springback behavior, namely spring-in, is surprisingly observed for a relatively narrow shoulder distance at all thicknesses and set angle values (? = 90°–120°). © 2018 Hydrogen Energy Publications LLC
dc.description.sponsorshipFirat University Scientific Research Projects Management Unit
dc.description.sponsorshipThe equipment and materials support of this research by Nigde Omer Halisdemir University Scientific Research Projects Coordination Unit under a project number of FEB 2017/30-ONAP is gratefully acknowledged.
dc.identifier.doi10.1016/j.ijhydene.2018.04.243
dc.identifier.endpage14647
dc.identifier.issn0360-3199
dc.identifier.issue31
dc.identifier.scopus2-s2.0-85048463974
dc.identifier.scopusqualityQ1
dc.identifier.startpage14638
dc.identifier.urihttps://dx.doi.org/10.1016/j.ijhydene.2018.04.243
dc.identifier.urihttps://hdl.handle.net/11480/1622
dc.identifier.volume43
dc.identifier.wosWOS:000441493800053
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherElsevier Ltd
dc.relation.ispartofInternational Journal of Hydrogen Energy
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectAnisotropy
dc.subjectCrofer
dc.subjectForming limit diagram
dc.subjectInterconnector
dc.subjectSolid oxide fuel cells
dc.subjectSpringback
dc.titleDetermination of formability characteristics of Crofer 22 APU sheets as interconnector for solid oxide fuel cells
dc.typeArticle

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