Combined Welding-Brazing Process for Joining AluminumSteel-Tailored Blanks with High Power Laser Sources 2002-01-2009
The use of high power laser sources (CO2) enables the joining of aluminum and zinc-coated steel sheets in butt configuration, using a combined welding-brazing process. Comparable to conventional thermal joining technologies, like resistance spot welding, intermetallic phases are formed in the contact zone leading to a decrease of the mechanical properties of the joint. With locally restricted energy input and high joining speeds the formation of these phases can be minimized to a none critical level. For the characterization of the seam morphology optical, X-ray and electron microscopy examinations have been carried out, demonstrating a phase layer thickness of about 2 μm. In mechanical tests, fracture stresses of 144 N/mm2 have been achieved.
Citation: Kreimeyer, M., Wagner, F., Sepold, G., Joly, M. et al., "Combined Welding-Brazing Process for Joining AluminumSteel-Tailored Blanks with High Power Laser Sources," SAE Technical Paper 2002-01-2009, 2002, https://doi.org/10.4271/2002-01-2009. Download Citation
Michael Kreimeyer, Florian Wagner, Gerd Sepold, Marion Joly, Bernard Criqui
Bremen Institute of Applied Beam Technology (Germany), RENAULT (France)
International Body Engineering Conference & Exhibition and Automotive & Transportation Technology Congress