Activation Spot Joining between Aluminum Alloy and Steel Sheet by Friction Surfacing

Abstract

Spot joining between Al alloy sheet (Al) and steel sheet (Fe) by means of friction surfacing was studied. When joining, Al and Fe are rotated relatively with respect to the consumable rod of Al alloy while pressing the rod onto the Al at the overlapped part. At the same time, the rod metal forms a padding which compensates for the thickness at the joined part. As a result, relatively higher tensile shear strength of the joining was obtained.