Yilmaz S.S.2024-07-222024-07-22201200255300http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/17810In this study, microstructural and mechanical properties of pure alu-minum, 5083 and 7075 alloys joined by friction stir welding were inves-tigated. Hardness, tensile, bending and impact tests were applied to the welded samples. In addition, optical and SEM tests were carried out. The effects of welding speed on microstructure and mechanical properties were investigated in these materials. Then, the optimal conditions for friction stir welding were determined for pure aluminum, 5083 and 7075 alloys. The maximum hardness was observed for 7075 while the minimum hardness was observed for pure aluminum. © Car Hanser Verlag, München.EnglishAluminumBending testsFrictionHardnessMechanical propertiesResearch laboratoriesTribologyWeldingMaximum hardnessMicro-structuralMicrostructure and mechanical propertiesOptimal conditionsPure aluminumSEM testWelding speedFriction stir weldingArticle10.3139/120.110323