Gradient structure formation in the process of severe plastic deformation of carbon steels under the conditions of the effect of dynamic strain aging

Open School-Conference of NIS Countries Ultrafine Grained and Nanostructured Materials

Raab, G.I.^1,2 ; Kodirov, I.S.^1 ; Aleshin, G.N.^1 ; Raab, A.G.^1,2 ; Tsenev, N.K.^3,4

Ufa State Aviation Technical University, 12 K. Marx str., Ufa

450008, Russia^1

Nosov Magnitogorsk State Technical University, 38 Lenin ave., Magnitogorsk

455000, Russia^2

Ufa Russia Transneft Research Institute, 144/3 pr. Oktyabrya, Ufa

450055, Russia^3

Ufa State Petroleum Technical University, Kosmonavtov st. 1, Ufa

450062, Russia^4

关键词: Deformation mechanism;    Deformation processing;    Dynamic strain aging;    Gradient structure;    High pressure torsions;    Medium-carbon steels;    Severe plastic deformations;    Temperature range;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/447/1/012078/pdf
DOI  :  10.1088/1757-899X/447/1/012078

来源: IOP

【 摘 要 】

The formation of a gradient structure during the severe plastic deformation (SPD) by high-pressure torsion (HPT) of low- and medium-carbon steels under the influence of dynamic strain aging (DSA) is studied. Deformation mechanisms under various regimes of deformation processing are analyzed. The temperature ranges of the DSA effect during the ECAP processing of steel 10 and the fact of the formation of a gradient structure during the HPT processing under these conditions are established. It is shown that the deformation of carbon steels in the DSA temperature range enables controlling the structure of the deformed state.