Effect of different strain rates on mechanical behavior and structure of Inconel 718 produced by powder bed fusion

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dc.contributor.authorKolomý, Štěpáncs
dc.contributor.authorBenč, Marekcs
dc.contributor.authorHarant, Martincs
dc.contributor.authorSedlák, Josefcs
dc.contributor.authorJopek, Miroslavcs
dc.coverage.issueLétocs
dc.date.accessioned2025-02-28T13:53:59Z
dc.date.available2025-02-28T13:53:59Z
dc.date.issued2024-07-27cs
dc.description.abstractThe paper aims to examine the effect of different strain rates on a mechanical behavior and structure of additively manufactured Inconel 718. The material was prepared by the powder bed fusion method, which is commonly employed for high-performance components subjected to both high static and dynamic loading. To analyze the material's behavior at various strain rates, a conventional hydraulic testing machine and a split hopkinson pressure bar apparatus were utilized. Additionally, the effect of these conditions on mechanical properties and microstructure was investigated. Results of compressive tests revealed a positive strain rate sensitivity of the material. Furthermore, the microhardness exhibited an increase by 33.9% in the horizontal direction after deformation caused by 2<middle dot>10-2 strain rate and 35.8% in the vertical direction, respectively. Additionally, the average grain size decreased by 43.3%, and the high-angle grain boundaries decreased by 5.4% in the horizontal direction after the excessive plastic deformation at the strain rate of 1.8<middle dot>103 s-1. Scanning electron microscopy images showed that the as-built structure predominantly consisted of Laves phases in a long strip shape, while the structure after dynamic testing featured a granular shape. Transmission electron microscopy analysis of a sample tested at strain rate of 0.002 s-1 revealed finely developed grains within the structure, many of which contained a dislocation substructure. This study's novelty and robustness lie in its significant contribution to practical industrial energy applications, in which parts are exposed to dynamic load such as gas turbines.en
dc.formattextcs
dc.format.extent16cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationInternational Journal of Mechanics and Materials in Design. 2024, issue Léto, 16 p.en
dc.identifier.doi10.1007/s10999-024-09724-6cs
dc.identifier.issn1573-8841cs
dc.identifier.orcid0000-0003-3781-692Xcs
dc.identifier.orcid0000-0003-4737-7369cs
dc.identifier.orcid0000-0002-9819-8259cs
dc.identifier.orcid0000-0001-5399-3059cs
dc.identifier.other189313cs
dc.identifier.researcheridE-3732-2018cs
dc.identifier.researcheridABB-4100-2021cs
dc.identifier.scopus37041666300cs
dc.identifier.scopus6504024580cs
dc.identifier.urihttps://hdl.handle.net/11012/250088
dc.language.isoencs
dc.publisherSpringer Naturecs
dc.relation.ispartofInternational Journal of Mechanics and Materials in Designcs
dc.relation.urihttps://link.springer.com/article/10.1007/s10999-024-09724-6cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1573-8841/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectInconel 718en
dc.subjectPowder bed fusionen
dc.subjectStrain rateen
dc.subjectSplit hopkinson pressure baren
dc.subjectMicrostructureen
dc.subjectMechanical propertiesen
dc.titleEffect of different strain rates on mechanical behavior and structure of Inconel 718 produced by powder bed fusionen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-189313en
sync.item.dbtypeVAVen
sync.item.insts2025.02.28 14:53:58en
sync.item.modts2025.02.28 14:32:04en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav strojírenské technologiecs
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