%0 Conference Paper %1 jarwitz2017electrical %A Jarwitz, Michael %A Fetzer, Florian %A Weber, Rudolf %A Graf, Thomas %B Lasers in Manufacturing Conference 2017 %D 2017 %I WLT %K Laser LaserMatterInteraction Welding myown %T Low electrical resistance of aluminum to copper joints achieved with temporal and spatial laser beam modulation %X Laser welding of pure copper (Cu-OF) to aluminum (Al99.5) in overlap configuration was investigated. It is shown, that temporal modulation of the laser power reduces the electrical resistance by suppressing inherent instabilities in the welding process when using copper as the top sheet. The resistance could be reduced by about 12% down to 1.7 μ in this configuration. Spatial modulation of the laser beam allows to adjust the averaged copper content of the weld seam when using aluminum as the top sheet by controlling the width and depth of the junction. With this, aluminum to copper welds with low electrical resistance of 1 μOhm could be achieved.

@inproceedings{jarwitz2017electrical, abstract = {Laser welding of pure copper (Cu-OF) to aluminum (Al99.5) in overlap configuration was investigated. It is shown, that temporal modulation of the laser power reduces the electrical resistance by suppressing inherent instabilities in the welding process when using copper as the top sheet. The resistance could be reduced by about 12% down to 1.7 μ in this configuration. Spatial modulation of the laser beam allows to adjust the averaged copper content of the weld seam when using aluminum as the top sheet by controlling the width and depth of the junction. With this, aluminum to copper welds with low electrical resistance of 1 μOhm could be achieved.}, added-at = {2018-04-20T12:24:08.000+0200}, author = {Jarwitz, Michael and Fetzer, Florian and Weber, Rudolf and Graf, Thomas}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2b05124f6f537abdd27bf3e7aad7a191e/thomas_graf}, booktitle = {Lasers in Manufacturing Conference 2017}, eventdate = {26 - 29 June 2017}, eventtitle = {Lasers in Manufacturing Conference 2017}, interhash = {53a4e284d79a587683bbad11a60ac335}, intrahash = {b05124f6f537abdd27bf3e7aad7a191e}, keywords = {Laser LaserMatterInteraction Welding myown}, month = {June}, publisher = {WLT}, timestamp = {2018-04-20T10:24:11.000+0200}, title = {Low electrical resistance of aluminum to copper joints achieved with temporal and spatial laser beam modulation}, venue = {Munich, Germany}, year = 2017 }