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Jabar, S, Sun, T, Franciosa, P, Kotadia, HR, Ceglarek, D, Paolini, B and Faulhaber, R (2023) Effect of a ring-shaped laser beam on the weldability of aluminum-to-hilumin for battery tab connectors. In: Journal of Laser Applications , 35 (4). 042038-042038-11. (42nd Annual International Congress of Applications of Lasers & Electro-Optics (ICALEO) 2023, 16-19 October 2023, Chicago, Illinois. America).
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Effect of a ringshaped laser beam on the weldability of aluminum-to-hilumin for battery tab connectors.pdf - Published Version Available under License Creative Commons Attribution. Download (12MB) | Preview |
Abstract
Advances in laser beam shaping technologies are being studied and are considered beneficial in many aspects of dissimilar metal joining, which include reducing intermetallic compounds (IMCs), optimizing weld pool profiles, and controlling porosity and spatters. This paper utilizes a coaxial ring and core dual beam laser and aims to study the impact of the power ratios between core and ring beams on the weldability of 1100 aluminum alloy to hilumin (steel). High-resolution electron microscopy was performed in the cross sections of the weld pools to quantify the melt pool composition and subsequent IMC formation and weld defects (cracking and cavitation). Lap-shear mechanical testing and electrical resistivity testing were also carried out. Results showed that the optimal power ratio for lap-shear strength was 0.4 (intermediate core and ring) due to the reduction in the Fe-rich liquid into the upper weld region. As a result, this produced a smaller interface between the Fe-rich region and Al, thus reducing the formation of the most detrimental IMC (e.g., Fe2Al5). Conversely, a power ratio of 0.2 (core-dominant) was found beneficial for reducing electrical resistance due to a reduced total IMC volume.
| Item Type: | Conference or Workshop Item (Paper) |
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| Uncontrolled Keywords: | 0910 Manufacturing Engineering; 0912 Materials Engineering; 0999 Other Engineering; Optoelectronics & Photonics |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics. Nuclear engineering |
| Divisions: | Engineering |
| Publisher: | Laser Institute of America |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 29 Nov 2023 14:50 |
| Last Modified: | 29 Nov 2023 14:50 |
| DOI or ID number: | 10.2351/7.0001156 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/21976 |
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