Residual stress and material flow prediction in Friction Stir Welding of Gr2 Titanium T-joints

Friction Stir Welding is nowadays an established technique successfully used by many industries. However, most of the research and, consequently, applications regard aluminum alloys and butt joints. T-joints are high interest for different industrial sectors as aeronautical, aerospace, naval ground transportation, which joint integrity low residual stress extremely important. In this study, experimental numerical approach proposed with aim to study peculiarities distribution material flow occurring in FSW CP-Ti T-joints. Experiments were carried out assess feasibility process acquire temperature data needed validation a specifically set-up model. Peculiar strategies have been defined order calculate affordable CPU time highlight bonding surface between skin stringer. Main findings include longitudinal profile from one usually found The reasons behavior explained through deep investigation on space evolution time. Finally, stringer was highlighted together possibility defects fillet area.