Self-pierce Riveting and Hybrid Joining of Boron Steels in Multi-material and Multi-sheet Joints

Currently there is only a small number of mechanical joining techniques that are suitable for fixing the boron steel with aluminium. Self-piercing solid riveting (SPSR) can be used for this combination of materials. In order to produce a joint which allows the fully utilizing of the materials, it is usually necessary to use structural high-strength adhesives in addition to a punctual joint (hybrid joining). The high joining forces during the SPSR process have a negative influence on the formation of the adhesive layer. This paper shows how to reduce negative effects on the adhesive area.