Combined Welding-Brazing Process for Joining AluminumSteel-Tailored Blanks with High Power Laser Sources
2002-01-2009
07/09/2002
- Event
- Content
- 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.
- Pages
- 8
- 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.