Quality of Interfaces in Cu/Al Dissimilar Friction-Stirred Welds
The current work focuses on the particular case of dissimilar 6082 Al alloy/pure copper butt-friction stirred joints. It takes advantage of voluntarily non optimized welding conditions in order to test the potential of an original approach of identification of the welding defects by means of a single tensile test. The sequence and mechanism of the fracture events arise from their localization on the fracture surfaces thanks to strain maps obtained by digital image correlation. This technique of flaws identification is proved to be particularly efficient at least with the present highly damaged welds.
T. Chandra, M. Ionescu and D. Mantovani
M. N. Avettand-Fènoël et al., "Quality of Interfaces in Cu/Al Dissimilar Friction-Stirred Welds", Materials Science Forum, Vols. 706-709, pp. 959-964, 2012