Microstructural Characterization of Improved Formability of Ti-6Al-4V Sheet by Pulsating Hydraulic Bulging at Room Temperature

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dc.contributor.authorYapan, Yusuf Furkan
dc.contributor.authorOzturk, Osman
dc.contributor.authorTurkoz, Mevlut
dc.contributor.authorDilmec, Murat
dc.contributor.authorLivatyali, Haydar
dc.contributor.authorHalkaci, Huseyin Selcuk
dc.contributor.authorKotan, Hasan
dc.date.accessioned2024-02-23T13:59:40Z
dc.date.available2024-02-23T13:59:40Z
dc.date.issued2023
dc.departmentNEÜen_US
dc.description.abstractThis study aims to increase the limited formability of the Ti-6Al-4V sheet at room temperature using the pulsating hydraulic bulging and to investigate the microstructural reasons for the increased formability. Accordingly, monotonic and pulsating hydraulic bulge tests (HBTs) were applied to Ti-6Al-4V sheets with 0.55 mm thickness at room temperature, and the underlying microstructural reasons for the improved formability were investigated by conducting detailed microstructural characterizations. The experimental results showed that the pulsating HBT samples reached 15.4% higher bulge dome height than the monotonic HBT samples, and a more homogeneous thickness distribution was achieved by pulsating bulging. The thickness and microhardness distributions, dislocation density estimations, and fracture surface analysis were utilized to correlate the increased formability with the microstructure. It was determined that stress relaxation occurred during the pulsating HBT, resulting in the achieved improved formability. The decrease in the dislocation density in the early stage of forming prevented the locking of the dislocations and delayed the occurrence of the damage, i.e., leading to the increased bulge dome height. The higher plastic deformation resulting from the increased formability also increased the hardness along the cross-section. The increased formability of the Ti-6Al-4V sheet during the pulsating HBT and the underlying microstructural phenomena elaborated in this study are expected to make significant contributions to the current literature on the sheet metals with limited formability at room temperature.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [219M489]en_US
dc.description.sponsorshipThis research was supported by the Scientific and Technological Research Council of Turkey (TUBITAK) under Grant Number 219M489.en_US
dc.identifier.doi10.1007/s11665-022-07550-5
dc.identifier.endpage6269en_US
dc.identifier.issn1059-9495
dc.identifier.issn1544-1024
dc.identifier.issue14en_US
dc.identifier.scopus2-s2.0-85140207063en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage6258en_US
dc.identifier.urihttps://doi.org/10.1007/s11665-022-07550-5
dc.identifier.urihttps://hdl.handle.net/20.500.12452/11260
dc.identifier.volume32en_US
dc.identifier.wosWOS:000870622800003en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal Of Materials Engineering And Performanceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFormabilityen_US
dc.subjectMicrostructural Characterizationen_US
dc.subjectPulsating Hydroformingen_US
dc.subjectStress Relaxationen_US
dc.subjectSheet Metal Formingen_US
dc.subjectTi-6al-4ven_US
dc.titleMicrostructural Characterization of Improved Formability of Ti-6Al-4V Sheet by Pulsating Hydraulic Bulging at Room Temperatureen_US
dc.typeArticleen_US

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