Tunçel, Oğuz2024-02-062024-02-062014Aydın, H. vd. (2014). "Effect of rotational speed and dwell time on mechanical properties of dissimilar AA1050-AA3105 friction stir spot welded joints". Materialpruefung/Materials Testing, 56(10), 818-825.0025-5300https://doi.org/10.3139/120.110636https://www.degruyter.com/document/doi/10.3139/120.110636/htmlhttps://hdl.handle.net/11452/39533Friction stir spot welding is a newly developed joining technology which is expected to be used in the automotive industry for joining body parts made of aluminum sheets. The effect of the rotational speed and dwell time on the mechanical properties of dissimilar friction stir spot welded aluminum sheet alloys was investigated in this study. In the experimental studies, macro-structural characterization, micro-hardness tests and tensile shear tests were conducted. The experimental results showed that the tensile shear load and tensile deformation of the friction stir spot welded joints decreased roughly by 20 % and 25 %, respectively, when the rotational speed increased from 1000 rpm to 2000 rpm. On the other hand, when the dwell time increased from 3 s to 11 s, the tensile shear load increased roughly by 7 %, while the tensile deformation decreased roughly by 19 %, respectively.eninfo:eu-repo/semantics/closedAccessDissimilar aluminium alloysAlFriction stir spot weldingStrengthMaterials testingMicrostructureMicrohardnessWelding parametersTensile shear loadSpot weldingAluminumTensile shear testAluminum alloysTensile shear loadAluminum sheetTensile deformationAutomotive industryStructural characterizationDeformationSpot-welded jointsFrictionMicrohardness testsFriction stir weldingJoining technologyJoiningFriction stir spot weldingLoad testingWeldsMaterials testingWeldingMechanical propertiesTribologyMicrohardnessTensile testingStainless steelMaterials ScienceArticle0003431340000072-s2.0-849084516638188255610Materials science, characterization & testingSpot Welding; Aluminum; Friction