Aufsatz
Dissimilar Friction Stir Butt Welding of Aluminium and Copper with Cross-Section Adjustment for Current-Carrying components
Abstract
Manufacturing dissimilar joints of aluminum and copper is a challenging task. However, friction stir welding (FSW) was found to be a suitable technique to produce aluminum–copper joints. Due to different electrical conductivities between aluminum and copper, an adjustment of the cross-section is required to realize electrical conductors free of resistive losses. Taking this into account, this paper presents initial results on the mechanical and electrical properties of friction stir butt welded aluminum and copper blanks having thicknesses of 4.7 mm and 3 mm, respectively. Three different approaches were investigated with the aim to produce sound welds with properties similar to those of the used base materials. Friction stir welding has been conducted at a welding speed of 450 mm/min. Subsequently, the welded specimens were subjected to metallographic analysis, tensile testing, and measurements of the electrical conductivity. The ultimate tensile force of the best joints was about 10 kN, which corresponds to joint efficiencies of approximately 72% of the aluminum base material. The analysis of electrical joint properties led to very promising results, so that the potential of FSW of Al–Cu butt joints with sheets having different thicknesses could be confirmed by the investigations carried out.
Citation
In: Metals 2018 / 8 (2018-08-24) , S. 661 ; EISSN: 2075-4701Sponsorship
Gefördert durch den Publikationsfonds der Universität KasselCitation
@article{doi:10.17170/kobra-20190130121,
author={Eslami, Nima and Harms, Alexander and Deringer, Johann and Fricke, Andreas and Böhm, Stefan},
title={Dissimilar Friction Stir Butt Welding of Aluminium and Copper with Cross-Section Adjustment for Current-Carrying components},
journal={Metals},
year={2018}
}
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2019-01-31T09:08:13Z 2019-01-31T09:08:13Z 2018-08-24 doi:10.17170/kobra-20190130121 http://hdl.handle.net/123456789/11044 Gefördert durch den Publikationsfonds der Universität Kassel eng Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ friction stir welding aluminium copper cross-section adjustment mechanical properties electrical properties 620 Dissimilar Friction Stir Butt Welding of Aluminium and Copper with Cross-Section Adjustment for Current-Carrying components Aufsatz Manufacturing dissimilar joints of aluminum and copper is a challenging task. However, friction stir welding (FSW) was found to be a suitable technique to produce aluminum–copper joints. Due to different electrical conductivities between aluminum and copper, an adjustment of the cross-section is required to realize electrical conductors free of resistive losses. Taking this into account, this paper presents initial results on the mechanical and electrical properties of friction stir butt welded aluminum and copper blanks having thicknesses of 4.7 mm and 3 mm, respectively. Three different approaches were investigated with the aim to produce sound welds with properties similar to those of the used base materials. Friction stir welding has been conducted at a welding speed of 450 mm/min. Subsequently, the welded specimens were subjected to metallographic analysis, tensile testing, and measurements of the electrical conductivity. The ultimate tensile force of the best joints was about 10 kN, which corresponds to joint efficiencies of approximately 72% of the aluminum base material. The analysis of electrical joint properties led to very promising results, so that the potential of FSW of Al–Cu butt joints with sheets having different thicknesses could be confirmed by the investigations carried out. open access Eslami, Nima Harms, Alexander Deringer, Johann Fricke, Andreas Böhm, Stefan doi:10.3390/met8090661 publishedVersion EISSN: 2075-4701 8 Metals 661 2018
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