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Correlation between laser welding sequence and distortions for thin sheet structures
RISE - Research Institutes of Sweden, Material och produktion, KIMAB. University West, Sweden.ORCID-id: 0000-0001-8933-6720
Volvo Cars, Sweden; KTH Royal Institute of Technology, Sweden.
RISE - Research Institutes of Sweden, Material och produktion, KIMAB.
University West, Sweden.
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2017 (Engelska)Ingår i: Science and technology of welding and joining, ISSN 1362-1718, E-ISSN 1743-2936, Vol. 22, nr 2, s. 150-156Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Thin ultra-high strength steel shaped as 700 mm long U-beams have been laser welded in overlap configuration to study the influence of welding sequence on distortions. Three different welding directions, three different energy inputs as well as stitch welding have been evaluated, using resistance spot welding (RSW) as a reference. Transverse widening at the ends and narrowing at the centre of the beam were measured. A clear correlation was found between the weld metal volume and distortion. For continuous welds there was also a nearly linear relationship between the energy input and distortion. However, the amount of distortion was not affected by a change in welding direction. Stitching and RSW reduced distortion significantly compared to continuous laser welding.

Ort, förlag, år, upplaga, sidor
2017. Vol. 22, nr 2, s. 150-156
Nyckelord [en]
Automotive, Distortion, High strength steel, Laser welding, Welding sequence, Distortion (waves), Joints (structural components), Laser beam welding, Resistance welding, Spot welding, Welding, Welds, Continuous laser welding, Linear relationships, Resistance spot welding, Thin-sheet structures, Ultra high strength steel, Welding directions, Welding sequences
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Naturvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-29342DOI: 10.1080/13621718.2016.1207046Scopus ID: 2-s2.0-84978705979OAI: oai:DiVA.org:ri-29342DiVA, id: diva2:1093902
Tillgänglig från: 2017-05-08 Skapad: 2017-05-08 Senast uppdaterad: 2019-07-02Bibliografiskt granskad

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Fahlström, Karl

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