Vibration behaviour of steel-aluminium mixed joints executed with a modified GMA short arc process

摘要

The joining of material combinations consisting of steel and alu minium in a reliable process was accomplished only in the recent times as a result of the development of digital arc processes. Within the framework of the excellence cluster "Integrative pro duction technology for high-wage countries'", the investigations of the applicability of the digitally regulated cold metal transfer (CMT) process (designed by Fronius Schweiβtechnik) to the joi ning of steel-aluminium hybrid structures were performed at the Welding and Joining Institute, Aachen. The behaviour of these hybrid structures under cyclic loading was tested at the Institute for Ferrous Metallurgy, Aachen. The test specimens used were flat tensile test specimens, which had the weld in the centre and were subjected to force-controlled, sinusoidal loads (R value: 0.1). The established stress-strain lines were analysed with re ference to the recommendations of IIW - International Institute of Welding.