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Dissimilar Laser Micro-Welding of Nickel Wire to CuSn6 Bronze Terminal

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Abstract

In the present study, the laser welding of wire to flat geometry for miniature electromechanical hybrid components has been investigated. Considering the geometry of parts to be welded and also requirement of mechanical properties, spatial modulation of the laser beam was needed to be implemented to achieve a sound joint. Tensile-shear test and optical microscopy were employed to represent the mechanical properties and melt pool geometry of the joints. All welds were done by power modulation of the laser beam to better control the energy input at several feed rates and three different beam trajectories. Results showed that the shear load of the joint could be controlled by feed rate and the trajectory of the laser beam. Considering the material combination of the study that were nickel and CuSn6 bronze, which represented solubility in solid state, a joint stronger than base wire metal was achieved by defining a proper spatial modulation and feed rate of the laser beam.

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Acknowledgement

The presented work is based on “Process Innovation for Sensors in Mobile Applications Based on Laser Assisted Metal-Plastic Joining” project (AFR-PPP grant, Reference 11633333). The authors would like to thank the support of Luxembourg National Research Fund (FNR) and acknowledge Cebi International S.A. as the industrial partner of the project.

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Authors and Affiliations

  1. University of Luxembourg, 6, rue Coudenhove-Kalergi, 1359, Luxembourg, Luxembourg

    Mahdi Amne Elahi & Peter Plapper

Authors
  1. Mahdi Amne Elahi
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  2. Peter Plapper
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Correspondence to Mahdi Amne Elahi.

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Amne Elahi, M., Plapper, P. Dissimilar Laser Micro-Welding of Nickel Wire to CuSn6 Bronze Terminal. Trans Indian Inst Met 72, 27–34 (2019). https://doi.org/10.1007/s12666-018-1457-y

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  • DOI: https://doi.org/10.1007/s12666-018-1457-y

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