from the conferences organized by TANGER Ltd.
The purpose of this work is to examine the structure of the transition zone of multilayer composites of dissimilar metallic materials obtained by the pulse method of metal processing and to establish the mechanism for the material bonding. In this work, a composite material obtained by explosion welding was used as an initial sample. The initial blanks for obtaining a layered composite material were a 1.5 mm thick plate made of steel 10 1 mm thick brass L60 and 5 mm thick copper M1, as well as a 7 mm thick plate made of steel 10 and 1.5 mm thick lead bronze (Pb - 22%, Sn - 1%). In the first sample, brass and copper plates were welded onto a horizontal steel plate, and in the second sample, a bronze plate was welded onto a steel plate as a result of an impact caused by an explosion. Copper and steel do not have significant mutual solubility, but despite this, they have been successfully subjected to explosion welding. The examination of the weld zone using X-ray micro-spectral analysis showed that, along the waves, there are areas containing both welded materials, as well as areas of a sharp concentration transition. Analysis formed phases in the system showed that a ternary compound Cu + αFe + β' is formed in the steel-brass transition zone. Zn largely penetrates into copper, that is the diffusional penetration of brass into copper occurs, as well as active mass transfer of zinc, with a constant decrease in zinc concentration from the upper to the lower boundary.
Keywords: Pulse metal forming, composite material, copper, steel, zinc, transition zone© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.