Structural transformations in steel on rolling with various percentage reduction in area and various strain fractionality

The structure of the 08Kh18N10T steel after hot rolled under different conditions has been studied. Comparison of the results obtained with the data of mechanical tests has shown that steel strengthening in the case of fractional deformation is related to continuous increase in dislocation density, formation of a disperse fragmented structure, characterized by the presence of large-angle boundaries of disorientation, and to a less degree, by precipitation of TiC carbides, which are homogeneously distributed over the grain. Material softening at high degree of reduction per die is explained by the processes of dynamic recrystallization, proceeding intensively under the conditions