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dc.contributor.authorBunaziv, Ivan
dc.contributor.authorDørum, Cato
dc.contributor.authorNielsen, Steen Erik
dc.contributor.authorSuikkanen, Pasi
dc.contributor.authorRen, Xiaobo
dc.contributor.authorNyhus, Bård
dc.contributor.authorEriksson, Magnus Carl Fredrik
dc.contributor.authorAkselsen, Odd Magne
dc.date.accessioned2020-10-27T07:01:02Z
dc.date.available2020-10-27T07:01:02Z
dc.date.created2020-04-02T16:01:07Z
dc.date.issued2020
dc.identifier.citationThe International Journal of Advanced Manufacturing Technology. 2020, 107 2649-2669.en_US
dc.identifier.issn0268-3768
dc.identifier.urihttps://hdl.handle.net/11250/2685110
dc.description.abstractHigh-power lasers are very effective in welding of plates thicker than 10 mm due to the keyhole mode. High-power intensity generates a vapor-filled cavity which provides substantial penetration depth. Due to the narrow and deep weld geometry, there is susceptibility to high hardness and weld defects. Imperfections occur due to keyhole instability. A 16-kW disk laser was used for single-pass welding of 12- to 15-mm thick plates in a butt joint configuration. Root humping was the main imperfection and persisted within a wide range of process parameters. Added arc source to the laser beam process may cause increased root humping and sagging due to accelerated melt flow. Humping was mitigated by balancing certain arc and other process parameters. It was also found that lower welding speeds (< 1.2 m/min) combined with lower laser beam power (< 13 kW) can be more positive for suppression of humping. Machined edges provided more consistent root quality and integrity compared with plasma cut welded specimens. Higher heat input (> 0.80 kJ/mm) welds provided hardness level below 325 HV. The welded joints had good Charpy toughness at − 50 °C (> 50 J) and high tensile strengthen_US
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectToughnessen_US
dc.subjectMechanical propertiesen_US
dc.subjectThick steelen_US
dc.subjectHigh strength steelen_US
dc.subjectHybrid weldingen_US
dc.subjectLaser weldingen_US
dc.titleLaser-arc hybrid welding of 12- and 15-mm thick structural steelen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holderThe Authors 2020. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.en_US
dc.source.pagenumber2649-2669en_US
dc.source.volume107en_US
dc.source.journalThe International Journal of Advanced Manufacturing Technologyen_US
dc.identifier.doihttps://doi.org/10.1007/s00170-020-05192-2
dc.identifier.cristin1805041
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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