Influence of Welding Tool Geometry on the SFSW Joint Dimensions of the EN AW 1200 Aluminium Alloy

The aim of the present paper is to study the aspects regarding the influence of the welding tool geometry on the joint dimensions during the SFSW (Submerged Friction-Stir Welding) of the EN AW 1200 aluminium alloy. Different tool geometries for SFSW welding of EN AW 1200 aluminium alloy parts were used, and joint size was analysed by macrostructural investigations. The key characteristics of the tool-weld interaction can be extracted, analysed and summarized to provide guidance on the optimal tool selection for a given set of welding conditions.