Investigation of Spindle Rotation Rate Effects on the Mechanical Behavior of Friction Stir Welded Ti 4Al 2V Alloy

Nowadays, titanium and its alloys are widely utilized in various industrial parts in such areas as the petrochemical, medical, and automotive industries; However, due to structural considerations, the application is problematic in cases of joining. Ti 4Al 2V is a new type of titanium alloy, that in point of the structure is near to the α-series, which have many applications in critical conditions (moisture, steam, temperature, etc.). One of the main drawbacks of titanium is the welding of this alloy; however, friction stir welding has been found to be a good method in joining solid materials, especially titanium and its alloys. In this research, the effective parameter of the spindle rotational rate has been varied through the process and its effect on the mechanical properties was examined.