Purpose. Repeated treatment of metal samples with shock waves leads to a decrease in the residual tensile stress, an increase in the intensity of beta lines, and an improvement in the plane-stress state of the surface layer material.
Application area. Mechanical engineering.
Advantages. Allows you to significantly reduce energy consumption and perform operations of surface plastic deformation of parts of varying rigidity and complex spatial configuration with higher quality.
Description. Repeated treatment of metal samples with shock waves leads to a decrease in the residual tensile stress, an increase in the intensity of beta lines, and an improvement in the plane-stress state of the surface layer material. It has been established that repeated electric pulse treatment of samples leads to a change in residual macrostresses both in the coating material and in the substrate. Repeated treatment of titanium alloys with plasma from an exploding aluminum conductor leads to the formation of macroscopic tensile stresses of about 300 MPa. It has been experimentally proven that repeated treatment of titanium samples with a pulsed magnetic field leads to a monotonous decrease in compressive residual macrostresses, enlargement of mosaic blocks occurs, and residual microscopic deformations decrease. A model for the mechanism of changes in the kinetics (and, accordingly, structure) of martensitic transformation in iron-based stacks is proposed.