Abstract
The shear strengths of diffusion-bonded overlap joints between silver-coated clad 7010 Al-alloy sheets of thicknesst = 3.2 mm have been determined for various overlap lengths (L) end out-of-plane bending constraints. The measured shear strength decreased with increase inL due to increased bending and peel stresses associated with the asymmetry of the loading path. For overlaps greater than about 1.25 to 1.9t peel fracture replaced shear fracture as the dominant deformation mode. The bond was more sensitive to peel stresses in the aged state than in the solution heat-treated state. For evaluating diffusion bonds between aluminium-alloys it is recommended that the bond area andL be measured on fracture surfaces and the shear strength be obtained for overlaps in the rangeL/t = 0.6 to 0.8 using overlap test pieces which are restrained from bending.
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Partridge, P.G., Dunford, D.V. On the testing of diffusion-bonded overlap joints between clad Al-Zn-Mg alloy(7010) sheet. J Mater Sci 22, 1597–1608 (1987). https://doi.org/10.1007/BF01132379
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DOI: https://doi.org/10.1007/BF01132379