Abstract
Fatigue properties of FS welds with a kissing bond (bonded welds) were studied by comparing the test results of bonded welds with those of sound welds. The fatigue life of bonded welds is 21∼43 times shorter than that of sound welds under the stress ratio R = 0.1, and the fatigue characteristic values of each welds have decreased from 100.24 MPa for sound welds to 65.57 MPa for bonded welds at 2 × 106 cycles. At the macroscopic level there is no evidence of failure by shear. The fatigue fracture revealed cracks initiated from the root tip of kissing bond.
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Zhou, C., Yang, X. & Luan, G. Effect of kissing bond on fatigue behavior of friction stir welds on Al 5083 alloy. J Mater Sci 41, 2771–2777 (2006). https://doi.org/10.1007/s10853-006-6337-x
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DOI: https://doi.org/10.1007/s10853-006-6337-x