Indentifying the effect of micro friction stir spot welding (µFSSW) parameters on weld geometry, mechanical properties, and metallography on dissimilar materials of AZ31B and AA1100

Micro-friction stir spot welding (µFSSW) is one type of that suitable for joining lightweight materials. One the challenges in materials with µFSSW material easily perforated, or join not strong enough, so it necessary to select right parameters. In this article discusses about investigates micro-Friction Stir Spot Welding parameters on weld geometry, mechanical properties, and metallography dissimilar AZ31B AA1100. The thickness AA100 0.5 mm 0.32 mm, respectively. tool made high-speed steel (HSS) a pin diameter 0.25 shoulder mm. constant process joint used, i. e., plunge depth, dwell time rate, high rotational speed 33,000 rpm. test results include metallography. Weld geometry testing determine nugget diameter. properties was shear tensile cross test, while metallographic included macrostructure microstructure observations. FSSW show at 700 milliseconds depth 600 microns, are close used. Dwell has significant effect strength. maximum loads achieved were 387±17 N 29±2 N, Intermetallic compounds (IMC) observed interface two materials, give cracks inside