Structure and properties of 45 grade steel after equal- channel angular pressing at 400 °с

The effect of severe plastic deformation (SPD) by equal-channel angular pressing on structure transformation and changes in the properties of 45 grade steel was studied. After four cycles of equalchannel angular pressing at 400°C, a significant refinement of the steel grain structure and improvement in its strength characteristics occur. Quantitative assessment of the change in parameters of the crystalline structure of ferrite and cementite as a result of severe plastic deformation was obtained. The influence of