Some Observations on Microstructural changes in Aluminium based alloys 7075 to 7075 subjected to Friction Stir Welding
Keywords:
FSW; Aluminium alloy, Mechanical properties, Microstructures, SEM with EDAX analysisAbstract
Microstructure and Mechanical properties of Al-7075 to Al 7075 was welded by Friction Stir Welding (FSW)
were evaluated.The effects of friction stir welding (FSW) on the microstructure and hardness of rolled aluminium 7075
were investigated. The weld was obtained by varying its tilt angle (2°) and Pin diameter (5mm). Tensile strength & %
Elongation was carried out to evaluate the strength of the weld. Optical microscope study was carried out to study the
uniform stirring of materials. The stir zone (SZ) contains fine, equiaxed and fully recrystallized grains.
Thermomechanically- affected zone (TMAZ), heat-affected zone (HAZ), and base material (BM) were different. Hardness
test indicated that the minimum and maximum hardness values were obtained in the HAZ and BM, respectively.
