Comparison of continuous and pulsed wave lasers in keyhole welding of stainless‑steel to aluminium

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dc.contributor.authorCoroado, Julio
dc.contributor.authorGanguly, Supriyo
dc.contributor.authorWilliams, Stewart
dc.contributor.authorSuder, Wojciech
dc.contributor.authorMeco, Sonia
dc.contributor.authorPardal, Goncalo
dc.date.accessioned2021-11-09T19:35:18Z
dc.date.available2021-11-09T19:35:18Z
dc.date.issued2021-10-31
dc.description.abstractA continuous wave (CW) and a nanosecond pulsed wave (PW) lasers were used to join 1-mm thick sheets of SS304L (SS) austenitic stainless-steel to AA5251 (Al) aluminium alloy in an overlap joint configuration. The weld shape (penetration depth and width), intermetallic compounds concentration, weld quality (cracking and porosity) and mechanical strength were correlated with the process energy and compared between each laser temporal mode. Successful CW joints were produced with the SS sheet on top of the Al, but the opposite configuration revealed to be impossible for the range of parameters tested. The PW joints were successful with the Al sheet on top of SS, but all the joints cracked at the interface when the opposite configuration was used. The mechanical tests showed that even though it is possible to achieve higher tensile shear load in CW welds due to the larger bonding area, the tensile shear strength revealed to be almost 5 × higher for PW welds at similar applied energy.en_UK
dc.identifier.citationCoroado J, Ganguly S, Williams S, et al., (2022) Comparison of continuous and pulsed wave lasers in keyhole welding of stainless‑steel to aluminium. International Journal of Advanced Manufacturing Technology, Volume 119, Issue 1-2, March 2022, pp. 367–387en_UK
dc.identifier.issn0268-3768
dc.identifier.urihttps://doi.org/10.1007/s00170-021-08226-5
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/17258
dc.language.isoenen_UK
dc.publisherSpringeren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectDissimilar metal joiningen_UK
dc.subjectKeyhole laser weldingen_UK
dc.subjectIntermetallic compoundsen_UK
dc.subjectAluminiumen_UK
dc.subjectStainless-steelen_UK
dc.titleComparison of continuous and pulsed wave lasers in keyhole welding of stainless‑steel to aluminiumen_UK
dc.typeArticleen_UK

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