*2.5. Mostly Processed Welded Structures*

Based on the literature cited the most friction stir processing has been performed to enhance the properties of the base metal rather than welded joints. There are limited works [46,60] reporting on processing the friction stir welded joints with only [76,80] reported on using FSP as a post processing of the TIG and FSWed welded joints. No other searchable literature was obtained on post processing for both FSW and TIG welded joints. This then suggest that there are more opportunities of exploring the impact of employing FSP technique on TIG welded structures.
