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Effect of grain size on the very high cycle fatigue behavior and notch sensitivity of titanium

dc.date.accessioned2023-12-22T10:23:40Z
dc.date.available2023-12-22T10:23:40Z
dc.date.issued2019
dc.identifierdoi:10.17170/kobra-202312229273
dc.identifier.urihttp://hdl.handle.net/123456789/15320
dc.description© This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/eng
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectultra-fine grained titaniumeng
dc.subjectequal channel angular extrusion/pressingeng
dc.subjectvery high-cycle fatigueeng
dc.subjectsevere plastic deformationeng
dc.subjectnotch sensitivityeng
dc.subjectfracture morphologyeng
dc.subject.ddc600
dc.subject.ddc620
dc.titleEffect of grain size on the very high cycle fatigue behavior and notch sensitivity of titaniumeng
dc.typeAufsatz
dcterms.abstractThe very high-cycle fatigue performances of coarse-grained and ultrafine-grained titanium samples with different geometries at ambient temperature and various stress amplitudes were investigated. Severe plastic deformation improves monotonic strength of titanium at the cost of a loss in ductility. Ultrafine-grained titanium demonstrates a superior fatigue performance compared to that of coarse-grained counterparts in the high-cycle fatigue regime, however, suffers notch sensitivity. Furthermore, in the very high-cycle fatigue regime stress-life curves merge unexpectedly. Microstructural inhomogeneity in the ultrafine-grained titanium is expected to be the reason. Analysis of fracture surfaces reveals that the formation of fatigue slip marks is evident on the fatigued samples of both microstructural states. Ultrafine-grained titanium is more prone to the intergranular fracture.eng
dcterms.accessRightsopen access
dcterms.creatorSajadifar, Seyed Vahid
dcterms.creatorWegener, Thomas
dcterms.creatorYapici, Guney Guven
dcterms.creatorNiendorf, Thomas
dc.relation.doidoi:10.1016/j.tafmec.2019.102362
dc.subject.swdUltrafeinkornger
dc.subject.swdTitanger
dc.subject.swdStrangpressenger
dc.subject.swdErmüdung bei sehr hohen Lastspielzahlenger
dc.subject.swdPlastische Deformationger
dc.subject.swdKerbwirkungger
dc.subject.swdBruchverhaltenger
dc.type.versionacceptedVersion
dcterms.source.identifiereissn:1872-7638
dcterms.source.journalTheoretical and Applied Fracture Mechanicseng
dcterms.source.volumeVolume 104
kup.iskupfalse
dcterms.source.articlenumber102362


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