| Abstract Scope |
Electron microscopy (transmission microscopy TEM) methods studied the effect of variable factors (ε, τ, t), as well as the relative amount of special low-energy boundaries in the ferritic and martensitic components of low-carbon steels in the concept of CSL (Coincidence Site Lattice). The optimal performances of thermoplastic deformation have been established, as a result of which the polygonization process takes place - a change in the configuration of grain boundaries, the formation of low-angle polygonal borders, interaction between themselves and high-angle, and special boundaries. The developed heat treatment performance provided an increase in impact hardness, both of the base metal and the heat-affected zone of low-carbon steels such as steel 10ХФТБч (Standard of Ukraine). This is due to the appearance of special boundaries – twin, sigma 5 and others, as well as the occurrence of polygonization. |