The joining of dissimilar materials is vital, since it is intended to obtain a product having a combination of desirable properties of both parent materials. The interdiffusion of alloying elements and development of similar orientations in the nugget could have contributed to the better tensile properties of the friction-stir-welded AA5052-AA6061 specimens. The tensile testing evaluation of these specimens showed good mechanical properties. ![]() The extent of interdiffusion of alloying elements at the interface was studied using electron probe microanalysis. It was observed that, at the interface region, both materials exhibited similar texture despite the nonrigorous mixing of the materials in the nugget. The microstructural studies were used to get an indication of the extent of material mixing both at the macro- and microscales. The transverse cross-section of the weld was used for optical as well as electron microscopy observations. ![]() In the present study, friction stir welding of two aluminium alloys-AA6061 and AA5052-was carried out at various combinations of tool rotation speeds and tool traverse speeds. ![]() Friction stir welding (FSW), a solid-state joining technique, is being extensively used in similar as well as dissimilar joining of Al, Mg, Cu, Ti, and their alloys.
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