ABSTRACT
Development of friction-based processes is a significant event that revolutionized the solid-state processing routes in the manufacturing industry. Superplasticity can be introduced in metals through friction stir processing (FSP). A wide variety of material systems can be successfully processed by FSP such as different steels, aluminum alloys, magnesium alloys, titanium, and its alloys. Development of friction stir channeling is another variant recently demonstrated to produce through blind cavity which can be used for internal circulation of fluids for coolant or in the applications of heat exchangers. Friction-assisted surface engineering processes have undoubtedly demonstrated their efficacy as advanced manufacturing processes. Development of friction surfacing to produce coating layers on the surface within the solid-state is another important development in friction-assisted processes. Friction deposition or with a specific name “friction free form” is such a good example that explains how friction surfacing leads to additive manufacturing.
