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Numerical study of beam oscillation and its effect on the solidification parameters and grain morphology in remote laser welding of high strength aluminium alloys
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Mohan, Anand, Ceglarek, Darek, Franciosa, Pasquale and Auinger, Michael (2023) Numerical study of beam oscillation and its effect on the solidification parameters and grain morphology in remote laser welding of high strength aluminium alloys. Science and Technology of Welding and Joining, 28 (5). pp. 362-371. doi:10.1080/13621718.2022.2163341 ISSN 1362-1718.
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WRAP-numerical-study-beam-oscillation-effect-solidification-parameters-grain-morphology-remote-laser-welding-high-strength-aluminium-alloys-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (3427Kb) | Preview |
Official URL: https://doi.org/10.1080/13621718.2022.2163341
Abstract
This study investigated the effect of beam oscillation on the solidification behaviour during laser welding of Al-5754 to Al-6061 alloy. In this study, a finite element model has been developed to simulate temperature and fluid flow fields by implementing different combinations of volumetric heat source models. Solidification parameters such as temperature gradient (G), solidification rate (R), cooling rate (G×R) and G/R are evaluated to understand the mechanism of microstructure formation. It was found that beam oscillation improves the tensile strength by 21.4% for full penetration welding due to an increase in the percentage of formation of equiaxed grains. Modelling results revealed that the cooling rate increases with an increase in oscillation frequency. However, tensile strength followed a parabolic distribution with a peak at the oscillation frequency of 300 Hz.
| Item Type: | Journal Article | ||||||
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| Alternative Title: | |||||||
| Subjects: | T Technology > TS Manufactures | ||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||
| Library of Congress Subject Headings (LCSH): | Laser welding, Surfaces (Technology), Laser beams -- Mathematical models, Microstructure, Solidification, Aluminum -- Welding | ||||||
| Journal or Publication Title: | Science and Technology of Welding and Joining | ||||||
| Publisher: | Maney Publishing | ||||||
| ISSN: | 1362-1718 | ||||||
| Official Date: | 11 January 2023 | ||||||
| Dates: |
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| Volume: | 28 | ||||||
| Number: | 5 | ||||||
| Page Range: | pp. 362-371 | ||||||
| DOI: | 10.1080/13621718.2022.2163341 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||
| Date of first compliant deposit: | 14 December 2022 | ||||||
| Date of first compliant Open Access: | 16 January 2023 | ||||||
| Funder: | This work is financially supported for the PhD studentship via the WMG-IIT partnership programme between WMG, University of Warwick (UK) and Indian Institute of Technology Kharagpur (India). | ||||||
| RIOXX Funder/Project Grant: |
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