Structural Transformation of the Surface of a High-Strength Steel after Hydroabrasive Action

Resumo

High-strength steel subjected to hydroabrasive action is studied. Contamination of the cut surface with fragments of abrasive particles is revealed. The cut-surface relief is described. The microhardness of the cut surface and the depth of the cold-hardened layer are determined. Structural transformation near the surface is studied using X-ray diffraction analysis and transmission electron microscopy. It is found that plastic deformation of the surface layer occurs by both slipping and twinning, which is due to the high rate of deformation occurring under conditions of compressive stresses.