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dc.contributor.authorBunaziv, Ivan
dc.contributor.authorWenner, Sigurd
dc.contributor.authorRen, Xiaobo
dc.contributor.authorFrostevarg, Jan
dc.contributor.authorKaplan, Alexander F.H.
dc.contributor.authorAkselsen, Odd Magne
dc.identifier.citationJournal of Manufacturing Processes. 2020, 54 228-239.nb_NO
dc.description.abstractWelds made by high power laser beam have deep and narrow geometry. Addition offiller wire by the arc source,forming the laser-arc hybrid welding (LAHW) process, is very important to obtain required mechanical prop-erties. Distribution of molten wire throughout the entire weld depth is of concern since it tends to have lowtransportation ability to the root. Accurate identification offiller metal distribution is very challenging. Metal-cored wires can provide high density of non-metallic inclusions (NMIs) which are important for acicular ferritenucleation. Accuratefiller distribution can be recognized based on statistical characterization of NMIs in theweld. In the present study, it was found that the amount offiller metal decreased linearly towards the root. Thefiller metal tends to accumulate in the upper part of the weld and has a steep decrease at 45–55 % depth whichalso has wavy pattern based on longitudinal cuts. Substantial hardness variation in longitudinal direction wasobserved, where in the root values can reach > 300 HV. Excessive porosity was generated at 75 % depth due tounstable and turbulent meltflow based on morphology of prior austenite grains. The delicate balance of processparameters is important factor for both process stability andfiller metal distributionnb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleFiller metal distribution and processing stability in laser-arc hybrid welding of thick HSLA steelnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.source.journalJournal of Manufacturing Processesnb_NO
dc.description.localcode© 2020 The Author(s). Published by Elsevier Ltd on behalf of The Society of Manufacturing Engineers. This is an open access article under the CC BY license (
cristin.unitnameInstitutt for fysikk

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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal