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Fatigue Behavior of Dissimilar Spot Friction Welds between Aluminum and Coated Steel Sheets in Lap-Shear and Cross-Tension Specimens
ISSN: 1946-3979, e-ISSN: 1946-3987
Published April 20, 2009 by SAE International in United States
Citation: Tran, V. and Pan, J., "Fatigue Behavior of Dissimilar Spot Friction Welds between Aluminum and Coated Steel Sheets in Lap-Shear and Cross-Tension Specimens," SAE Int. J. Mater. Manf. 2(1):68-74, 2009, https://doi.org/10.4271/2009-01-0036.
Fatigue behavior of dissimilar Al/Fe spot friction welds between aluminum 6000 series alloy and coated steel sheets in lap-shear and cross-tension specimens is investigated based on experiments and three-dimensional finite element analyses. Micrographs of the welds after failure under quasi-static and cyclic loading conditions show that the Al/Fe welds in lap-shear and cross-tension specimens failed along the interfacial surface. Three-dimensional finite element analyses based on the micrographs of the welds before testing were conducted to obtain the J-integral solutions at the critical locations of the welds under lap-shear and cross-tension loading conditions. The numerical results suggest that the J-integral solutions at the critical locations of the welds can be used as a fracture mechanics parameter to correlate the experimental fatigue data of the Al/Fe spot friction welds in lap-shear and cross-tension specimens.