Magnitogorsk State Technical University (Magnitogorsk, Russia):

Chukin M. V., Dr. Eng., Prof., 1st Vice Rector, Head of the Chair "Machine-building and Metallurgical Technologies", e-mail: m.chukin@mail.ru
Polyakova M. A., Cand. Eng., Ass. Prof., e-mail: m.polyakova-64@mail.ru
Gulin A. E., Assistant, e-mail: walter_chel@mail.ru
Emaleeva D. G., Cand. Eng., Senior Lecturer, e-mail: emaleevadg@mail.ru

The necessity for development of continuous methods of severe plastic deformation based on a combination of diff erent schemes of plastic deformation is shown. The ultrafi ne grain structure that is obtained by such exposure, provides improved mechanical properties of metals and alloys without changing their chemical composition. Based on combination of tensile and compression kinds of deformation (which exist in drawing process) with bending and twisting kinds of deformation, the methods providing ultrafi ne grain structure in processed wire are developed. The essential diff erence between the proposed methods and other methods of severe plastic deformation is the ability of continuous processing of long-size items with round cross-section in the industrial conditions, using various hardware devices and industrial equipment already applied for steel wire production. It is mentioned that these methods have diff erent eff ectiveness in obtaining the ultrafi ne grain structure in processed carbon wire and hence it has diff erent level of the mechanical properties. It can be explained by diff erent extent of impact intensity of combined deformation. The investigation of wire mechanical properties after various kinds of combined deformation impact showed wide possibilities to change its mechanical properties in a wide range.

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6. M. V. Chukin, D. G. Emaleeva, M. P. Baryshnikov, M. A. Polyakova. Sposob polucheniya dlinnomernykh zagotovok kruglogo poperechnogo secheniya s ultramelkozernistoy strukturoy (Method of obtaining of long-length circular cross-section billets with ultra fine-grain structure). Patent RF 2446027. Applied: May 31, 2010. Published: March 27, 2012. Bulletin No. 9.
7. M. V. Chukin, M. A. Polyakova, E. M. Golubchik, V. P. Rudakov, S. E. Noskov, A. E. Gulin. Sposob polucheniya ultramelkozernistykh polufabrikatov volocheniem s krucheniem (Method of obtaining of ultra fine-grain half-finished products by dragging with rotating). Patent RF, No. 2467816. Applied: February 28, 2011. Published: November 27, 2012. Bulletin No. 33.
8. M. A. Polyakova, M. V. Chukin, E. M. Golubchik, A. E. Gulin. Ustroystvo dlya izgotovleniya provoloki s ultramelkozernistoy strukturoy (Unit for manufacturing of wire with ultra fine-grain structure). Patent RF, No. 130525. Applied: February 04, 2013. Puublished: July 27, 2013. Bulletin No. 21.
9. Chukin M. V., Koptseva N. V., Korchunov A. G., Emaleeva D. G., Nikitenko O. A. Issledovanie osobennostey strukturoobrazovaniya v protsesse intensivnoy plasticheskoy deformatsii uglerodistykh konstruktsionnykh staley (Research of peculiarities of structureformation in the process of intenssive plastic deformation of carbon
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