Reference : Laser welding of dissimilar copper and aluminum sheets by shaping the laser pulses
Scientific journals : Article
Engineering, computing & technology : Mechanical engineering
Physics and Materials Science
http://hdl.handle.net/10993/40299
Laser welding of dissimilar copper and aluminum sheets by shaping the laser pulses
English
Mathivanan, Karthik mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Plapper, Peter mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
2019
Procedia Manufacturing
36
154-162
Yes
International
2351-9789
[en] Laser welding ; Dissimilar metal joining ; Cu-Al joints ; Pulse modulation
[en] Dissimilar metal joining of thin copper and aluminum sheets is very important in the battery connections. The main problem while joining this dissimilar combination is formation of brittle intermetallic phases that degrade the electrical and mechanical properties of the joint. For joining copper and aluminum sheet with laser, very high intensity in the range of 10^7 W/cm^2 is required. Intermixture of copper and aluminum is vital for joint ductility. In this paper, the effect of combined oscillation and shaping of the laser pulses on the overlap welding of copper-aluminum is studied. Precise control of intermixing can be achieved by modifying the laser pulse i.e. the percentage of power with respect to the pulse time. Investigation on different pulse shapes with ramp up and ramp down profile is conducted by cross-section and microstructural analysis.
Investissement pour la compétitivite et emploi” - European Regional Development Fund (Grant agreement: 2017-02-016)
Researchers ; Professionals ; Students
http://hdl.handle.net/10993/40299
10.1016/j.promfg.2019.08.02
https://www.journals.elsevier.com/procedia-manufacturing

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