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The Influence of Shielding Gas and Heat Input on the Mechanical Properties of Laser Welds in Ferritic Stainless Steel
University of Oulu, University of Oulu, Oulu Southern Institute.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.ORCID iD: 0000-0002-9010-1555
University of Oulu.
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2015 (English)In: Physics Procedia, ISSN 1875-3892, E-ISSN 1875-3892, Vol. 78, p. 222-229Article in journal (Refereed) Published
Abstract [en]

Laser welding of ferritic steel in normal atmosphere gives rise to weld embrittlement and poor formability. This paper demonstrates that the addition of an argon gas shield to the welding process results in tough, formable welds. Post weld heat treatment and microscopic analysis has suggested that the poor ductility of welds produced without a gas shield is, to some extent, the result of the presence of oxides in the weld metal.

Place, publisher, year, edition, pages
2015. Vol. 78, p. 222-229
National Category
Manufacturing, Surface and Joining Technology
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-29522DOI: 10.1016/j.phpro.2015.11.032ISI: 000370876600024Scopus ID: 2-s2.0-84965031038Local ID: 30802d3c-2942-4965-b944-107c573aa17fOAI: oai:DiVA.org:ltu-29522DiVA, id: diva2:1002746
Conference
Nordic Laser Materials Processing Conference : 25/08/2015 - 27/08/2015
Note
Validerad; 2015; Nivå 1; 20151126 (andbra); Konferensartikel i tidskriftAvailable from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-07-10Bibliographically approved

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Sundqvist, JesperPowell, JohnKaplan, Alexander

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