**5. Conclusions**

The absence of voids or defects on the macrostructure of the joint suggests the success of welding the two dissimilar aluminium alloys (AA1050-H14 and AA5083-H111). The UTS of the base metals was found to be higher than the UTS of the tested specimens. In addition to this, the specimen extracted at the beginning of the weld exhibited the lowest UTS compared to the specimens extracted from other locations of the weld. The ductility of the specimens fluctuated between that of the parent materials. The fracture location was found to be consistent with the one reported in the literature [11,12,16]. This kind of failure is due to the coarsened grain found in the location of failure (AA1050-H14 HAZ region). The characteristic hook defect on the side of the weaker material was also observed during the

microstructural analysis [29–31,33]. The morphology of the fracture surface indicated ductile failure mode, which was characterized by cup-like dimples for all the specimens.

**Author Contributions:** Authors have contributed equally to this work. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Acknowledgments:** Authors would like to thank EM Masekwana for his technical assistance during welding.

**Conflicts of Interest:** The authors declare no conflict of interest.
