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Mechanisms forming undercuts during laser hybrid arc welding
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
Luleå University of Technology, Department of Engineering Sciences and Mathematics.ORCID iD: 0000-0003-4265-1541
Luleå University of Technology, Department of Engineering Sciences and Mathematics.ORCID iD: 0000-0002-3569-6795
2011 (English)In: Physics Procedia, ISSN 1875-3892, E-ISSN 1875-3892, Vol. 12, no 1, p. 201-207Article in journal (Refereed) Published
Abstract [en]

That the final quality of a welded joint, using a laser hybrid arc process, is sensitive not only to the geometrical joint conditions, but also to the content of elements in the surface itself, is already known. However the description of the mechanisms forming undercut defects is still vague. In the following study two kinds of undercuts were identified. It is shown how the mill scales affects the melt motion and what mechanisms actuate the creation of the defects. The conclusion that surface oxides affect the severity of weld undercuts is straight forward but here also the mechanism is explained. Keywords: laser; hybrid; welding; mill scale; oxides; defects; undercut

Place, publisher, year, edition, pages
2011. Vol. 12, no 1, p. 201-207
National Category
Manufacturing, Surface and Joining Technology
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-31549DOI: 10.1016/j.phpro.2011.03.026ISI: 000298054100025Scopus ID: 2-s2.0-79959428668Local ID: 5c5c549a-c578-4e66-bba6-d5ffc4385840OAI: oai:DiVA.org:ltu-31549DiVA, id: diva2:1004783
Conference
WLT Conference on Lasers in Manufacturing : 23/05/2011 - 26/05/2011
Note

Validerad;2011;20110505 (andbra);Konferensartikel i tidskrift;Bibliografisk uppgift: Lasers in Manufacturing 2011 - Proceedings of the Sixth International WLT Conference on Lasers in Manufacturing.

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-07-10Bibliographically approved

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Norman, PeterKarlsson, JanKaplan, Alexander

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