Effect of high-pressure rolling followed by laser processing on mechanical properties, microstructure and residual stress distribution in multi-pass welds of 304L stainless steel

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dc.contributor.authorSule, Jibrin
dc.contributor.authorGanguly, Supriyo
dc.contributor.authorSuder, Wojciech
dc.contributor.authorPirling, Thilo
dc.date.accessioned2016-08-24T15:30:36Z
dc.date.available2016-08-24T15:30:36Z
dc.date.issued2016-01-18
dc.description.abstractMulti-pass fusion welding by a filler material (wire) is normally carried out to join thick steel sections used in most engineering applications. Multiple thermal cycles from a multi-pass weld resulted in a variable distribution of residual stress field across the weld and through the thickness. Presence of tensile residual stresses can be detrimental to the integrity and the service behaviour of the welded joint. In addition to a complex distribution of residual stress state, multi-pass welds also form dendritic grain structure, which are repeatedly heated, resulting in segregation of alloying elements. In this research, microstructural refinement with modification of residual stress state was attempted by applying post-weld cold rolling followed by laser processing and then cold rolling. The residual stress was determined non-destructively by using neutron diffraction. Post-weld cold rolling followed by laser processing was carried out to induce recrystallization of the cold rolled grains. Microstructural characterisation indicates a significant grain refinement near the capping pass. However, post-weld cold rolling followed by laser processing reinstates the lock-in stress. In this study, it was demonstrated that a complete recrystallized microstructure with compressive state of stress can be formed when a further cold rolling is applied on the laser processed, recrystallized microstructure.en_UK
dc.identifier.citationJibrin Sule, Supriyo Ganguly, Wojciech Suder and Thilo Pirling. Effect of high-pressure rolling followed by laser processing on mechanical properties, microstructure and residual stress distribution in multi-pass welds of 304L stainless steel.en_UK
dc.identifier.cris3858793
dc.identifier.issn0268-3768
dc.identifier.urihttp://dx.doi.org/10.1007/s00170-015-8299-0
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/10435
dc.language.isoenen_UK
dc.publisherSpringeren_UK
dc.rightsAttribution 4.0 International (CC BY 4.0) You are free to: Share — copy and redistribute the material in any medium or format, Adapt — remix, transform, and build upon the material for any purpose, even commercially. The licensor cannot revoke these freedoms as long as you follow the license terms. Under the following terms: Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Information: No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
dc.subjectMulti-pass weldsen_UK
dc.subjectMicrostructureen_UK
dc.subjectResidual stressen_UK
dc.subjectRollingen_UK
dc.subjectLaser processingen_UK
dc.titleEffect of high-pressure rolling followed by laser processing on mechanical properties, microstructure and residual stress distribution in multi-pass welds of 304L stainless steelen_UK
dc.typeArticleen_UK

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