Abstract

Stationary shoulder friction stir welding (SSFSW) offers new opportunities for joining material. Although this joining technique was described many years ago it has only recently been actively studied and developed for industrial use. The non-rotating shoulder offers a different weld thermal profile, the potential to weld more complex joint configurations and adding material via a filler wire. This paper describes SSFSW and the work being undertaken at TWI to develop this technique and its derivatives. Process benefits and weld properties are discussed highlighting potential industrial applications.

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