Speaker
Description
Friction stir welding (FSW) excels at joining dissimilar thickness aluminum alloys due to its low heat input. However, defect formation remains a challenge. This study investigates the influence of welding parameters and jig angle on temperature and defect formation in FSW of dissimilar aluminum plate thickness. Experiments utilized a conventional milling machine with a customized tool. Three key parameters were varied to minimize defects which are tool rotational speed, tool travel speed and jig angle. Temperature data was collected using a K-type thermocouple placed within the joint. Analysis focused on relating process parameters to defect occurrence, including flash, tunnels, and root defects, as well as to process temperature. Results showed that tool rotational speed played a large role in determining defect presence and process temperature. In dissimilar thickness FSW, different jig angles was found to influence defect presence such as tunnel defects, root defects and excessive flash.
Keywords
fsw, friction stir welding, dissimilar thickness, aluminium alloy, jig angle
