Dissimilar Aluminum Joining of ADC3 and AA5052 by Friction Stir Welding
Conference proceedings article
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Publication Details
Author list: Sininad Buangam, Supatas Sangthong, Somluk Ubonwat, Phromphong Pandee
Publication year: 2023
Start page: 735
End page: 740
Number of pages: 6
Abstract
Friction stir welding (FSW) is a solid-stage welding process in which the heat entering the weld is low, and no alloying elements are added to the weld. The friction stir welding can weld both single and different materials. Assembly consisting of cast and wrought aluminum alloys has wide-spread application in many industries. In the present study, ADC3 and AA5052 aluminum alloys were friction stir welded under tool rotational speeds of 1500-2100 rev/min and traversing speeds of 500-600 mm/min, keeping other parameters the same. The microstructure, microhardness, and porosity defects were investigated. Microstructure characterization of the bonded assemblies reveals the breaking of the coarse eutectic silicon network in the stirring zone. Metallographic examination revealed some porosity within the weld nugget. The area where the porosity is formed is on the advancing side. Additionally, the hardness of the weld nugget based on various conditions is not significantly different. ADC3 is harder than AA5052 because it contains a significant quantity of silicon, which results in a high hardness.
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