Scientists from Russia Create New Method to Advance Explosion Welding Studies
As a rule, waves form in the impact zone, and cumulation is observed in front of the contact point. The compound, according to scientists, is formed in the solid phase - that is, without melting.In this way, it is possible to combine metal bodies with an area from several square decimeters to several square meters, experts noted. However, the wide application of this technology is hampered by the insufficient knowledge of its physical parameters, especially the temperature in the impact region.Scientists at the Volgograd State Technical University (VolSTU) - together with their colleagues from the Institute of Hydrodynamics of the Siberian Branch of the Russian Academy of Sciences - found a solution to this problem.
According to them, the proposed technique makes it possible to accurately measure the temperature of the contacting metals during the explosion welding process, despite the fact that it takes millionths of a second.The obtained experimental data, according to experts, will allow for the better control of the welding process through the adjustment of the properties of the resulting composites. The materials created in this way are in demand today in the rocketry and space industries as well as the energy sector, the scientists noted.The study was carried out jointly with specialists from the Institute of Hydrodynamics of the Siberian Branch of the Russian Academy of Sciences. In the future, the research team intends to find a complete solution to the thermal problem for explosive welding, that is, to describe all shock-wave and deformation processes at the boundary of the metals being welded, as well as the processes of heat and mass transfer and cumulation in the gap between them.