Solid-State Joining of Dissimilar Materials with Friction Stir Scribe Technology
Meeting: Aeromat, 2016
Symposium: Joining
Authors: Yuri Hovanski, Piyush Upadhyay, Saumyadeep Jana, Leo Fifield – Pacific Northwest National Laboratory
The advantages of multi-material design can be thwarted when coupled with the realities of joining vastly different materials. This is further complicated with the introduction of new microstructure sensitive metals and reinforced composites, which only increases the need to be able to join very application specific materials to those with dramatically different properties. This especially becomes a challenge in cost sensitive, high volume markets that have largely relied on low-cost welding solutions. Friction stir scribe technology was engineered to meet the demands of joining materials with drastically different properties and melting regimes. The process enables joining of metals like magnesium and aluminum to much higher melting temperature metals like titanium and steels. Furthermore, it creates linear joining opportunities between polymeric materials and metals. A review of this innovative derivative to traditional frictions stir welding will be presented in reference to joining dissimilar metals and polymer/metal combinations.