@misc{suhuddin_microstructure_evolution_2017, author={Suhuddin, U.F.H., Fischer, V., Kostka, A., dos Santos, J.F.}, title={Microstructure evolution in refill friction stir spot weld of a dissimilar Al–Mg alloy to Zn-coated steel}, year={2017}, howpublished = {journal article}, doi = {https://doi.org/10.1080/13621718.2017.1300744}, abstract = {In the present study, dissimilar welds of an Al–Mg–Mn alloy and a Zn-coated high-strength low-alloy steel were welded by refill friction stir spot welding. The maximum shear load recorded was approximately 7.8 kN, obtained from the weld produced with a 1600 rev min−1 tool rotational speed. Microstructural analyses showed the formation of a solid–liquid structure of an Al solid solution in Mg–Al-rich Zn liquid, which gives rise to the formation of Zn-rich Al region and microfissuring in some regions during welding. Exposure of steel surface to Mg–Al-rich Zn liquid led to the formation of Fe2Al5 and Fe4Al13 intermetallics. The presence of defective Zn-rich Al regions and Fe–Al intermetallics at the faying surface affects the weld strength.}, note = {Online available at: \url{https://doi.org/10.1080/13621718.2017.1300744} (DOI). Suhuddin, U.; Fischer, V.; Kostka, A.; dos Santos, J.: Microstructure evolution in refill friction stir spot weld of a dissimilar Al–Mg alloy to Zn-coated steel. Science and Technology of Welding and Joining. 2017. vol. 22, no. 8, 658-665. DOI: 10.1080/13621718.2017.1300744}}