Friction Based Joining Techniques
Friction welding (FW) is a solid-state welding technique that works on the principle of conversion of mechanical energy into thermal energy. There are several variants of FW, each having its own salient features, significance, limitations, and applications. In this chapter, different variants of FW are briefly overviewed with respect to their working principles and process schematics. Friction-based techniques that can be utilized in additive manufacturing are highlighted. A timeline of these techniques as AM tools is presented to highlight their recent developments and current status of research in the domain of metal additive manufacturing.