Article (Scientific journals)
Laser welding of dissimilar copper and aluminum sheets by shaping the laser pulses
MATHIVANAN, Karthik; PLAPPER, Peter
2019In Procedia Manufacturing, 36, p. 154-162
Peer reviewed
 

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Keywords :
Laser welding; Dissimilar metal joining; Cu-Al joints; Pulse modulation
Abstract :
[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.
Disciplines :
Mechanical engineering
Author, co-author :
MATHIVANAN, Karthik ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
PLAPPER, Peter ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
External co-authors :
no
Language :
English
Title :
Laser welding of dissimilar copper and aluminum sheets by shaping the laser pulses
Publication date :
2019
Journal title :
Procedia Manufacturing
ISSN :
2351-9789
Publisher :
Elsevier, Amsterdam, Netherlands
Volume :
36
Pages :
154-162
Peer reviewed :
Peer reviewed
Focus Area :
Physics and Materials Science
Name of the research project :
Laser Technology competence Center – Phase III
Funders :
Investissement pour la compétitivite et emploi” - European Regional Development Fund (Grant agreement: 2017-02-016)
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since 09 September 2019

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