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dc.date.accessioned2022-05-06T05:18:24Z
dc.date.available2022-05-06T05:18:24Z
dc.date.issued2021-12-15
dc.identifierdoi:10.17170/kobra-202205066138
dc.identifier.urihttp://hdl.handle.net/123456789/13813
dc.description.sponsorshipGefördert durch den Publikationsfonds der Universität Kassel
dc.language.isoeng
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectlocalized corrosioneng
dc.subjectintergranular corrosioneng
dc.subjectlaser claddingeng
dc.subjectdirected energy depositioneng
dc.subjectlaser metal depositioneng
dc.subjectthin sheeteng
dc.subjectsheet metaleng
dc.subjectferritic stainless steeleng
dc.subject.ddc600
dc.titleA Novel Approach to Inhibit Intergranular Corrosion in Ferritic Stainless Steel Welds Using High-Speed Laser Claddingeng
dc.typeAufsatz
dcterms.abstractFerritic stainless steels are prone to localized corrosion phenomena such as pitting corrosion or intergranular corrosion, in particular when jointed by fusion welding processes. State-of-the-art techniques to avoid intergranular corrosion mainly consist of alternating alloy concepts or post-weld heat-treatments—all of which are associated with increased production costs. Hence, the present investigation seeks to introduce a novel approach for the inhibition of intergranular corrosion in ferritic stainless steel welds through the use of high-speed laser cladding. Here, vulnerable sites prone to intergranular corrosion along the weld seam area are coated with a chemically resistant alloy, whereby an overlap is achieved. Optical and electron microscopy as well as computer tomography and tensile tests reveal that the detrimental effects of intergranular corrosion in both stabilized and unstabilized ferritic stainless steel are substantially reduced. In addition to that, the effects of varying overlap widths on the identified corrosion phenomena are studied. Moreover, the resulting dilution and precipiation phenomena at the clad–sheet interface are thoroughly characterized by electron backscatter diffraction and energy dispersive X-ray spectroscopy, whereby interrelationships to corrosion resistance can be drawn. As a result of this investigation, the number of techniques for the inhibition of intergranular corrosion is enlarged, and substantial cost-saving potentials in the manufacturing industry are unlocked.eng
dcterms.accessRightsopen access
dcterms.creatorSommer, Niklas
dcterms.creatorGrimm, Lukas
dcterms.creatorWolf, Christian
dcterms.creatorBöhm, Stefan
dc.relation.doidoi:10.3390/met11122039
dc.subject.swdLaserauftragsschweißenger
dc.subject.swdLaserger
dc.subject.swdBeschichtungger
dc.subject.swdInterkristalline Korrosionger
dc.subject.swdNicht rostender Stahlger
dc.type.versionpublishedVersion
dcterms.source.identifiereissn: 2075-4701
dcterms.source.issueIssue 12
dcterms.source.journalMetalseng
dcterms.source.volumeVolume 11
kup.iskupfalse
dcterms.source.articlenumber2039


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