Stir zone material flow patterns during friction stir welding of heavy gauge AA5056 workpieces and stability of its mechanical properties

OBRABOTKAMETALLOV MATERIAL SCIENCE Vol. 23 No. 4 2021 Fig. 1. Scheme of the friction stir welding process and cutting out samples for mechanical tests and metallography: 1 – workpiece; 2 – tool; 3 – tool pin; 4 – direction of tool rotation; 5 – direction of friction stir processing/welding; 6 – cutting area of the specimens for mechanical tests; 7 – processing zone; 8 – cutting of the blade-shaped test specimens in the vertical direction; 9 – cutting of the blade-shaped test specimens in transverse direction; 10 – cutting of the blade-shaped test specimens in longitudinal direction; 11 – metallographic sections; 12 – stir zone; 13 – thermomechanically affected and heat affected zones Fig. 2. Scheme of cutting out samples in horizontal section to study the material plastic fl ow in the stir zone through the thickness of the processed material: 1 – tool inlet zone; 2 – tool outlet zone