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G. Liedl, R. Bielak et al.:
"Joining of Aluminum and Steel in Car Body Manufacturing";
Talk: 6th International WLT Conference on Lasers in Manufacturing, München; 2011-05-23 - 2011-05-26.

Zinc-coated steel sheets have been joined with aluminum samples in an overlapping as well as in a butt-joint configuration. A bi-
metal-wire composed from aluminum and steel was used for additional welding experiments. An advantage of the laser-assisted
bi-metal-wire welding is that the welding process is simplified since the primary joint between aluminium and steel exists already
and laser welding occurs only between similar materials. FEM-simulations of the process were chosen to determine the ideal
dimensions with respect to the formability of the bi-metal-wire. A prototype demonstrated the feasibility of the process.

Zinc-coated steel sheets have been joined with aluminum samples in an overlapping as well as in a butt-joint configuration. A bi-
metal-wire composed from aluminum and steel was used for additional welding experiments. An advantage of the laser-assisted
bi-metal-wire welding is that the welding process is simplified since the primary joint between aluminium and steel exists already
and laser welding occurs only between similar materials. FEM-simulations of the process were chosen to determine the ideal
dimensions with respect to the formability of the bi-metal-wire. A prototype demonstrated the feasibility of the process.

laser welding; intermetallic phases; FEM, IMP

Project Head Gerhard Liedl:
Thermisches Fügen von Aluminum mit Stahl