On the basis of the results obtained for joints of dissimilar metals such as copper–tantalum
and iron–silver, the reason of immiscible suspensions mixing upon explosion welding has
been cleared out. It has been found that the interface (plain or wavy) is not smooth and
contains inhomogeneities, namely, cusps and local melting zones. The role of granulating
fragmentation providing partitioning of initial materials as a main channel of input energy
dissipation has been revealed. It has been shown that in joints of metals possessing normal
solubility the local melting zones are true solutions, but if metals possess no mutual
solubility the local melting zones are colloidal solutions. Realization of either emulsion or
suspension variant takes place. The results can be used in the development of new joints of
metals possessing no mutual solubility.