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Friction stir welding of carbon steel and austenitic stainless steel /

Ahmed Elsayed Abdelaziz Dawoud

Friction stir welding of carbon steel and austenitic stainless steel / اللحام الاحتكاكي التقليبى للصلب منخفض الكربون والصلب الغر قابل للصدأ 304 Ahmed Elsayed Abdelaziz Dawoud ; Supervised Mohamed Raafat Elkoussy , Mohamed Zaky Ahmed - Cairo : Ahmed Elsayed Abdelaziz Dawoud , 2018 - 67 P. : charts , facsimiles ; 30cm

Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Metallurgical Engineering

Friction stir welding (FSW) was invented for the purpose of joining metals which were known to be non-weldable such as some aluminum alloys. FSW has rapidly progressed into a viable joining technology for a variety of metals and alloys. FSW provide a solution to weld dissimilar alloys which are difficult to be welded by conventional processes. In the present work, FSW was used to weld 3 mm thick St37 carbon-steel and 304 austenitic stainless-steel A tool of tungsten carbide was used for welding due to high melting point of steel. Welded joints were inspected with visual inspection, radiography, and macrostructure. The mechanical properties of the joints in terms of tensile and hardness testing were also conducted. Further studies were applied using an optical microscope and XRD to examine the microstructure of the joints. Different microstructural regions were obtained due to the influence of tool rotation, vertical force and generated heat



Carbon steel Friction stir welding Stainless steel