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dc.date.accessioned2022-01-31T14:42:48Z
dc.date.available2022-01-31T14:42:48Z
dc.date.issued2021-07-29
dc.identifierdoi:10.17170/kobra-202112095211
dc.identifier.urihttp://hdl.handle.net/123456789/13579
dc.description.sponsorshipGefördert im Rahmen des Projekts DEALger
dc.language.isoengeng
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectadditive manufacturingeng
dc.subjectINCONEL 718eng
dc.subjectlaser powder bed fusioneng
dc.subjectresidual stresseng
dc.subjectsynchrotron measurementseng
dc.subject.ddc620
dc.titleA Novel Approach to Robustly Determine Residual Stress in Additively Manufactured Microstructures Using Synchrotron Radiationeng
dc.typeAufsatz
dcterms.abstractIn recent decades additive manufacturing (AM) for years has been in focus of academia and industry as its underlying production principle allows for the realization of designs of unprecedented geometrical complexity. However, often such structures are not realized due to the lack of understanding of structural and mechanical properties, this fact amongst others related to the unique microstructures established by the related processes. In this context, residual stresses, highly affected by the scan strategy and process parameters used, play an essential role. Generally, various methods and approaches can be used to determine residual stress states experimentally. However, especially in case of the unique microstructures formed by AM, most standard procedures cannot be applied reliably. Commonly used methods based on X-ray diffraction rely on laboratory X-ray sources and synchrotron radiation. In present work, a novel method is proposed for robustly calculating residual stresses based on the linear regression method (similar to the sin2 ψ approach in reflection mode). Data obtained by use of synchrotron radiation in transmission mode are applied. To assess the reliability of the novel procedure, results are validated using simulations and in situ tensile tests. For these tests the well-known Ni-base alloy INCONEL 718 processed by laser powder bed fusion (LPBF), being characterized by a complex microstructure, and a conventionally manufactured 100Cr6 steel sample are used.eng
dcterms.accessRightsopen access
dcterms.creatorAminforoughi, Behzad
dcterms.creatorDegener, Sebastian
dcterms.creatorRichter, Julia
dcterms.creatorLiehr, Alexander
dcterms.creatorNiendorf, Thomas
dc.relation.doidoi:10.1002/adem.202100184
dc.relation.projectidGrant Number: 346979276
dc.subject.swdRapid Prototyping <Fertigung>ger
dc.subject.swdInconel 718ger
dc.subject.swdSelektives Laserschmelzenger
dc.subject.swdEigenspannungger
dc.subject.swdSynchrotronstrahlungger
dc.type.versionpublishedVersion
dcterms.source.identifiereissn:1527-2648
dcterms.source.issueIssue 11
dcterms.source.journalAdvanced Engineering Materialseng
dcterms.source.volumeVolume 23
kup.iskupfalse
dcterms.source.articlenumber2100184


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