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A comparison of middle transverse and longitudinal samples of 6 mm thick FSW AA5083/AA6082 joints is reported in this study. To investigate the differences, the study compares the FSW middle samples, obtained from the two orientations, to the parent materials through metallographic (macro/microstructure) and mechanical (tensile, micro-hardness) tests. The results revealed that the transverse and longitudinal samples had hardness values of 93.90 and 119.27 HV0.2, respectively, whereas the highest tensile strength of the same samples was 130.694 MPa and 127.833 MPa, with strain values of 0.054 and 0.0834, respectively.

This study investigates the mechanical and microscopic characteristics of the friction stir welded AA5083/AA6082 dissimilar joint. The welding process was performed at a rotational speed of 900 rpm, traverse speed of 60 mm/min, and a tool tilt angle of 1º. Samples were extracted from the joint's start, middle, and end positions in both the traverse and longitudinal directions. The analysis of these samples involved various tests, including microstructural analysis, bending, and tensile tests. The microstructural analysis revealed non-linear behaviour in both the longitudinal and traverse sampling directions along the joint. Specifically, there were notable differences in the microstructure between the different locations within the joint. In terms of mechanical properties, the ultimate tensile strength results of the traverse specimens were found to be higher compared to the specimens sampled longitudinally. This suggests that the joint's strength may vary depending on the sampling direction. On the other hand, the flexural strength results showed a contrasting pattern, with the traverse specimens exhibiting lower strength values compared to the longitudinally sampled specimens. This indicates that the joint's resistance to bending forces may differ based on the sampling direction.