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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.en_US
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 distribution.en_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.subjectLaser-arc hybrid weldingen_US
dc.subjectHigh strength steelen_US
dc.subjectThick steelen_US
dc.subjectNon-metallic inclusionsen_US
dc.subjectFiller metal distributionen_US
dc.subjectMechanical propertiesen_US
dc.titleFiller metal distribution and processing stability in laser-arc hybrid welding of thick HSLA steelen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder© 2020 The Authorsen_US
dc.source.journalJournal of Manufacturing Processesen_US
cristin.unitnameMaterialer og nanoteknologi

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