ABSTRACT
The vessel is made of a composite: carbon steel–copper–tantalum, by means of explosive welding. Works were performed by the Dynamic Materials Corporation. With a decrease in the intensification of the welding mode, a transition occurs from the wavy interface considered to a flat surface observed near the lower boundary of the ‘weldability window’. The friction between the particles is sharply increased due to the fact that they have a much larger surface than the surface of the contacting plates and fly away not in free, but in a closed space. But then, due to the high diffusion mobility of carbon in a liquid, a stream of carbon atoms arises from the melt to the solid phase. In steel–steel, steel–metal welded joints, carbon segregation zones will appear, similar to those observed in the compound under study, if the conditions stated are fulfilled.
