Hybrid fiber laser: arc welding of thick section high strength low alloy steel

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DOIResolve DOI: http://doi.org/10.1016/j.matdes.2011.02.002
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TypeArticle
Journal titleMaterials & Design
Volume32
Issue6
Pages33993413; # of pages: 15
SubjectHybrid fibre laser - arc welding; High strength low alloy steel; HSLA-65; Process optimization
AbstractHybrid laser – metal active gas (MAG) arc welding is an emerging joining technology that is very promising for shipbuilding applications. This technique combines the synergistic qualities of the laser and MAG arc welding techniques, which permits a high energy density process with fit-up gap tolerance. As the heat input of hybrid laser – arc welding (HLAW) is greater than in laser welding, but much smaller than in MAG arc welding, a relatively narrow weld and restricted heat affected zone (HAZ) is obtained, which can minimize the residual stress and distortion. Furthermore, adding MAG arc can increase the penetration depth for a given laser power, which can translate to faster welding speeds or fewer number of passes necessary for one-sided welding of thick plates. In this work, a new hybrid fiber laser – arc welding system was successfully applied to fully penetrate 9.3 mm thick butt joints using a single-pass process through optimization of the groove shape, size and processing parameters.
Publication date
LanguageEnglish
AffiliationNRC Institute for Aerospace Research; National Research Council Canada
Peer reviewedYes
NRC numberAMTC-2010-0069
NPARC number19726581
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Record identifierf33aae15-5127-4433-8c1f-f3f3ca45933f
Record created2012-03-26
Record modified2016-05-09
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