Machines. Technologies. Materials.
Vol. 20 (2026), Issue 2, pg(s) 77-80

MATERIALS

Effect of non-metallic inclusions on the grain structure of low-carbon steels under severe plastic deformation

  • 1 Iron and Steel Institute of National Academy of Science of Ukraine; Ukrainian State University of Science and Technologies: Prydniprovska State Academy of Civil Engineering and Architecture; Aerospace Institute. Dnepr, Ukraine

Abstract

The features of localization of severe plastic deformation in a steel matrix near non-metallic inclusions are studied. In the steel matrix, near inclusions and at the inclusion-matrix interphase boundaries, the nature of the stressed and deformed states changes, the strain increment is determined by the rotation angle of the inclusion during its movement in the plastic region. Processes of local structural transformations near non-metallic inclusions in steels exposing to intensive plastic deformation were investigated. The influence of non-metallic inclusions on the local refinement of the steel microstructure is an important effect during severe plastic deformation, which makes it possible to obtain additional nanostructural strengthening near the inclusions during the general refinement of grains to a submicrocrystalline state. It was shown the influence of non-metallic inclusions on mechanical properties of these steels.

Keywords

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