Fatigue Life of 7475-T7351 Aluminum After Local Severe Plastic Deformation Caused by Machining

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dc.contributor.authorOhnišťová, Petracs
dc.contributor.authorPíška, Miroslavcs
dc.contributor.authorPetrenec, Martincs
dc.contributor.authorDluhoš, Jiřícs
dc.contributor.authorHorníková, Janacs
dc.contributor.authorŠandera, Pavelcs
dc.coverage.issue21cs
dc.coverage.volume12cs
dc.date.accessioned2020-08-04T11:03:29Z
dc.date.available2020-08-04T11:03:29Z
dc.date.issued2019-11-03cs
dc.description.abstractThe fatigue properties of thermo-mechanically treated and machined aluminum alloy 7475-T7351 have been studied. The applied advanced machining strategy induced intensive plastic deformation on the machined surface under defined cutting conditions. Therefore, a detailed study of 3D surface topography was performed. Advanced characterization of the material structure and electron back scattered diffraction mapping of selected chemical phases were performed, as well as energy dispersive X-ray analysis of the surface. Advanced mechanical properties of the material were investigated in situ with a scanning electron microscope that was equipped with a unique tensile fixture. The fatigue results confirmed an evident dispersion of the data, but the mechanism of crack nucleation was established. Fracture surface analysis showed that the cracks nucleated at the brittle secondary particles dispersed in the material matrix. The surface topography of samples that had been machined in wide range of cutting/deformation conditions by milling has not proved to be a decisive factor in terms of the fatigue behavior. The incoherent interface and decohesion between the alumina matrix and the brittle secondary phases proved to significantly affect the ultimate strength of the material. Tool engagement also affected the fatigue resistance of the material.en
dc.formattextcs
dc.format.extent1-23cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2019, vol. 12, issue 21, p. 1-23.en
dc.identifier.doi10.3390/ma12213605cs
dc.identifier.issn1996-1944cs
dc.identifier.other159700cs
dc.identifier.urihttp://hdl.handle.net/11012/181103
dc.language.isoencs
dc.publisherMPDIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttps://www.mdpi.com/1996-1944/12/21/3605/htmcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1996-1944/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectcrack nucleationen
dc.subjectfatigueen
dc.subjectplastic deformationen
dc.subjectsurface topographyen
dc.titleFatigue Life of 7475-T7351 Aluminum After Local Severe Plastic Deformation Caused by Machiningen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-159700en
sync.item.dbtypeVAVen
sync.item.insts2021.11.22 12:54:50en
sync.item.modts2021.11.22 12:25:16en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav strojírenské technologiecs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Pokročilé kovové materiály a kompozity na bázi kovůcs
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