dc.contributor.author | Bunaziv, Ivan | |
dc.contributor.author | Dørum, Cato | |
dc.contributor.author | Nielsen, Steen Erik | |
dc.contributor.author | Suikkanen, Pasi | |
dc.contributor.author | Ren, Xiaobo | |
dc.contributor.author | Nyhus, Bård | |
dc.contributor.author | Eriksson, Magnus Carl Fredrik | |
dc.contributor.author | Akselsen, Odd Magne | |
dc.date.accessioned | 2020-10-27T07:01:02Z | |
dc.date.available | 2020-10-27T07:01:02Z | |
dc.date.created | 2020-04-02T16:01:07Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | The International Journal of Advanced Manufacturing Technology. 2020, 107 2649-2669. | en_US |
dc.identifier.issn | 0268-3768 | |
dc.identifier.uri | https://hdl.handle.net/11250/2685110 | |
dc.description.abstract | High-power lasers are very effective in welding of plates thicker than 10 mm due to the keyhole mode. High-power intensity generates a vapor-filled cavity which provides substantial penetration depth. Due to the narrow and deep weld geometry, there is susceptibility to high hardness and weld defects. Imperfections occur due to keyhole instability. A 16-kW disk laser was used for single-pass welding of 12- to 15-mm thick plates in a butt joint configuration. Root humping was the main imperfection and persisted within a wide range of process parameters. Added arc source to the laser beam process may cause increased root humping and sagging due to accelerated melt flow. Humping was mitigated by balancing certain arc and other process parameters. It was also found that lower welding speeds (< 1.2 m/min) combined with lower laser beam power (< 13 kW) can be more positive for suppression of humping. Machined edges provided more consistent root quality and integrity compared with plasma cut welded specimens. Higher heat input (> 0.80 kJ/mm) welds provided hardness level below 325 HV. The welded joints had good Charpy toughness at − 50 °C (> 50 J) and high tensile strength | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Springer | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.subject | Toughness | en_US |
dc.subject | Mechanical properties | en_US |
dc.subject | Thick steel | en_US |
dc.subject | High strength steel | en_US |
dc.subject | Hybrid welding | en_US |
dc.subject | Laser welding | en_US |
dc.title | Laser-arc hybrid welding of 12- and 15-mm thick structural steel | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | The Authors 2020. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. | en_US |
dc.source.pagenumber | 2649-2669 | en_US |
dc.source.volume | 107 | en_US |
dc.source.journal | The International Journal of Advanced Manufacturing Technology | en_US |
dc.identifier.doi | https://doi.org/10.1007/s00170-020-05192-2 | |
dc.identifier.cristin | 1805041 | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |