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Einfluss der Wandstärke auf das Umformverhalten und das Schweißergebnis beim Magnetpulsschweißen

Effect of the wall thickness on the forming behavior and welding result during magnetic pulse welding
 
: Bellmann, Jörg; Lueg-Althoff, Jörn; Schulze, Sebastian; Hahn, Marlon; Gies, Soeren; Beyer, Eckhard; Tekkaya, A. Erman

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Materialwissenschaft und Werkstofftechnik 50 (2019), Nr.8, S.883-892
ISSN: 0933-5137
ISSN: 1521-4052
Deutsche Forschungsgemeinschaft DFG
Joining by plastic deformation;
Englisch
Zeitschriftenaufsatz
Fraunhofer IWS ()
collision conditions; dissimilar metal welding; magnetic pulse welding; solid state welding; wall thickness; welding window

Abstract
Magnetic pulse welding is a promising technology for the joining of dissimilar metals. Since the input of thermal energy is significantly reduced compared to conventional fusion welding technologies, critical intermetallic phases can largely be avoided. Therefore, proper collision conditions are necessary. Those require a careful adjustment of the energetic and geometric parameters at the impact welding setup. The thickness of the accelerated joining partner (flyer) determines the necessary energy input for a successful weld. However, at the same time, it has an effect on the weld formation. This study utilizes a novel optical measurement system to explain these findings and to gain insights into the forming behavior of the flyer parts. It is shown that the collision angle depends on the flyer tube thickness and, thus, directly has an effect on the welding result.

: http://publica.fraunhofer.de/dokumente/N-559050.html