A STUDY ON INTERNAL DEFECTS IN FRICTION STIR WELDING OF ALUMINIUM ALLOYS
Item Type:Conference Paper
Citation:Karen Johanna Quintana Cuellar, Harry Mitrogiannopoulos, Daniel Hiller, Daniel Trimble, Rocco Lupoi, Garret O'Donnell, Jose Luis Silveira, Shaun McFadden, A STUDY ON INTERNAL DEFECTS IN FRICTION STIR WELDING OF ALUMINIUM ALLOYS, 31st International Manufacturing Conference (IMC31), Cork (Ireland), 3rd of September, 2014, 69 - 74
IMCPaper (Updated)draft 4.pdf (Published (author's copy) - Peer Reviewed) 242.4Kb
Friction Stir Welding (FSW) is a solid state welding process that offers advantages over the conventional techniques. As it is a solid state process, re - solidification defects like porosity and cracks are greatly reduced . T he aim of the research undertaken was to examine weld quality of FSW joints using destructive and non - destructive methods . Welds were produced in Al 5052 and Al 2024 plates using a tapered cylinder pin profile . X - ray imaging was used to determine the weld qu ality of the Al 5052 joints . Cross - sectional analysis was undertaken on weld samples of Al 2024 joints. In both cases, a tunnel defect (internal defect) was found running parallel to the advancing side of each weld. This defect was located at the depth of pin penetration in the 2024 joints. It was found that the size of the defect could be reduced by altering operating parameters and weld path. Tests undertaken on the Al 2024 plates showed that that defect free welds can be produced by using pin profiles wh ich encourage greater plastic deformation.
Other Titles:31st International Manufacturing Conference (IMC31)
Type of material:Conference Paper
Availability:Full text available