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Localized deformation and failure mechanism in TIG-welded wire-arc additively manufactured 304 stainless steel

2026-07Artigo científico Acesso aberto
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dc.contributor.authorDong, Hang
dc.contributor.authorLiu, Zhiyuan
dc.contributor.authorShen, Jiajia
dc.contributor.authorSchell, Norbert
dc.contributor.authorLi, Yongcun
dc.contributor.authorWang, Yong
dc.contributor.authorOliveira, João Pedro
dc.contributor.institutionCENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)
dc.contributor.institutionDCM - Departamento de Ciência dos Materiais
dc.contributor.pblElsevier Editora Ltda
dc.date.accessioned2026-07-24T15:24:01Z
dc.date.available2026-07-24T15:24:01Z
dc.date.issued2026-07
dc.descriptionPublisher Copyright: © 2026 The Authors.
dc.description.abstractTo enable the fabrication of complex structural components, this study investigates the post-weld microstructure and mechanical properties of wire arc additively manufactured (WAAMed) 304 stainless steel. The investigation employs both EBSD and in-situ synchrotron X-ray diffraction (SXRD) techniques. The research reveals grain size variations across the processed material (heat-affected zone (HAZ) vs fusion zone (FZ)), as well as differences in the kernel average misorientation (KAM) among the different regions that coexist in the material. During tensile deformation, the material underwent sequential martensitic transformation following the γ → ε → α′ sequence, with the FZ demonstrating greater elongation (approximately 64%). Strain accommodation is achieved through the synergistic interaction of dislocation slip and martensitic transformation. In-situ SXRD analysis reveals that during loading, the dislocation density increases to varying degrees across different regions (FZ, HAZ, and base metal (BM)), indicating the occurrence of coordinated deformation within the material. Ultimately, fracture occurs in the BM region under the combined effect of its high KAM value and the continuous increase in α′-martensite content under high local dislocation density.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent12
dc.format.extent13038270
dc.identifier.doi10.1016/j.jmrt.2026.07.011
dc.identifier.issn2238-7854
dc.identifier.otherPURE: 169340612
dc.identifier.otherPURE UUID: 8ef63109-d108-49f3-bab6-e0cf53c8ba67
dc.identifier.otherScopus: 105043655625
dc.identifier.otherWOS: 001819848300001
dc.identifier.otherORCID: /0000-0001-6906-1870/work/221756204
dc.identifier.urihttp://hdl.handle.net/10362/204843
dc.identifier.urlhttps://www.scopus.com/pages/publications/105043655625
dc.identifier.urlhttps://www.webofscience.com/wos/woscc/full-record/WOS:001819848300001
dc.language.isoeng
dc.peerreviewedyes
dc.subject304 stainless steel
dc.subjectMartensitic transformation
dc.subjectSynchrotron X-ray diffraction
dc.subjectWelding
dc.subjectCeramics and Composites
dc.subjectBiomaterials
dc.subjectSurfaces, Coatings and Films
dc.subjectMetals and Alloys
dc.titleLocalized deformation and failure mechanism in TIG-welded wire-arc additively manufactured 304 stainless steelen
dc.title.subtitleAn in-situ synchrotron XRD studyen
dc.typejournal article
degois.publication.firstPage3718
degois.publication.lastPage3729
degois.publication.titleJournal of Materials Research and Technology
degois.publication.volume43
dspace.entity.typePublication
rcaap.rightsopenAccess

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