Developing friction stir welding window for AA2219 aluminium alloy
(Centre for Materials Joining & Research (CEMAJOR), Department of Manufacturing Engineering,
Annamalai University, Annamalai Nagar−608 002, Tamil Nadu, India)
Annamalai University, Annamalai Nagar−608 002, Tamil Nadu, India)
Abstract: A friction stir welding window was developed for effective joining of AA2219 aluminium alloy. Joints were fabricated using different combination of process parameters such as rotational speed and welding speed. Based on macrostructural analysis, the friction stir welding window was constructed. The strength values of joints at different regions of friction stir welding window were analyzed using tensile properties, microstructural studies, and the fracture location of joints was correlated with the lowest hardness distribution profiles. These windows will act as reference maps for selecting appropriate friction stir welding process parameters to get good quality welds of AA2219 aluminium alloys.
Key words: friction stir welding window; aluminium alloy; lowest hardness distribution profile; tensile strength