Paper Title:

Quality of Interfaces in Cu/Al Dissimilar Friction-Stirred Welds

Periodical Materials Science Forum (Volumes 706 - 709)
Main Theme THERMEC 2011
Edited by T. Chandra, M. Ionescu and D. Mantovani
Pages 959-964
DOI 10.4028/www.scientific.net/MSF.706-709.959
Citation Marie Noëlle Avettand-Fènoël et al., 2012, Materials Science Forum, 706-709, 959
Online since January, 2012
Authors Marie Noëlle Avettand-Fènoël, Roland Taillard, Gang Ji
Keywords 6082-T6 Alloy, Cu-Al, Digital Image Correlation Technique, Friction Stir Welding (FSW), Microstructure, Tensile Fracture Initiation Sites, Welding Defects
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Abstract

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.