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dc.contributor.authorBunaziv, Ivan
dc.contributor.authorFrostevarg, Jan
dc.contributor.authorAkselsen, Odd Magne
dc.contributor.authorKaplan, Alexander F.H.
dc.date.accessioned2020-12-22T07:27:31Z
dc.date.available2020-12-22T07:27:31Z
dc.date.created2017-11-06T11:40:10Z
dc.date.issued2017
dc.identifier.citationPhysics Procedia. 2017, 89 11-22.en_US
dc.identifier.issn1875-3892
dc.identifier.urihttps://hdl.handle.net/11250/2720673
dc.description.abstractThick section welding has significant importance for oil and gas industry in low temperature regions. Arc welding is usually employed providing suitable quality joints with acceptable toughness at low temperatures with very limited productivity compared to modern high power laser systems. Laser-arc hybrid welding (LAHW) can enhance the productivity by several times due to higher penetration depth from laser beam and combined advantages of both heat sources. LAHW was applied to join 45 mm high strength steel with double-sided technique and application of metal cored wire. The process was captured by high speed camera, allowing process observation in order to identify the relation of the process stability on weld imperfections and efficiency. Among the results, it was found that both arc power and presence of a gap increased penetration depth, and that higher welding speeds cause unstable processing and limits penetration depth. Over a wide range of heat inputs, the welds where found to consist of large amounts of fine-grained acicular ferrite in the upper 60-75% part of welds. At the root filler wire mixing was less and cooling faster, and thus found to have bainitic transformation. Toughness of deposited welds provided acceptable toughness at -50 °C with some scattering.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.subjecttoughnessen_US
dc.subjectacicular ferriteen_US
dc.subjectthick sectionen_US
dc.subjecthigh strength low alloy steelen_US
dc.subjecthybrid weldingen_US
dc.titleHybrid Welding of 45 mm High Strength Steel Sectionsen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© 2017 The Author(s). Published by Elsevier B.V. This is an open access article under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.source.pagenumber11-22en_US
dc.source.volume89en_US
dc.source.journalPhysics Procediaen_US
dc.identifier.doi10.1016/j.phpro.2017.08.006
dc.identifier.cristin1511198
dc.relation.projectNorges forskningsråd: 228513en_US
cristin.unitcode7401,80,6,5
cristin.unitnameMaterialers integritet og sveising
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
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