Abstract
The results obtained for joints of dissimilar metals, iron-silver (earlier, copper-tantalum), which form immiscible liquid suspensions, explain why they are mixed in explosive welding. Inhomogeneities of the wavy interface, such as protrusions and zones of localized melting, were observed. The effect of granulating fragmentation, which is responsible for crushing initial materials into particles, was understood as one of the most efficient ways to dissipate the supplied energy. It is shown that, in the case of joints of metals without mutual solubility, zones of localized melting represent colloidal solutions, which form either emulsions or suspensions. At solidification, the emulsion represents a hazard for joint stability due to possible separation; on the contrary, suspension can enable the dispersion strengthening of the joint. The results can be used in the development of new metal joints without mutual solubility.
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Original Russian Text © B.A. Greenberg, M.A. Ivanov, V.V. Rybin, O.A. Elkina, A.V. Inozemtsev, A.Yu. Volkova, S.V. Kuz’min, V.I. Lysak, 2012, published in Fizika Metallov i Metallovedenie, 2012, Vol. 113, No. 11, pp. 1099–1110.
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Greenberg, B.A., Ivanov, M.A., Rybin, V.V. et al. Explosive welding: Mixing of metals without mutual solubility (iron-silver). Phys. Metals Metallogr. 113, 1041–1051 (2012). https://doi.org/10.1134/S0031918X12110075
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DOI: https://doi.org/10.1134/S0031918X12110075