Friction Stir Processing - Enhanced Low-temperature Formability

Manufacturing of components from thick plates usually is done by joining, as bending and shaping is difficult because of limited ductility. In as FSP condition, aluminum alloys exhibit very high ductility. Mahoney et al. (2003) have used this to bend 1” thick 2519 Al plate with just a partial FSP layer on the tensile side. This would give designers added flexibility of shaping sheets and plates with localized enhanced formability. With low heat input from FSP, the region of reduced strength is very limited. In applications where some of the welded joints are replaced by bends, such design can lead to significantly higher performance.