Deformation of Copper by High-Pressure Torsion
Volokitina I. Volokitin A. Kuis D.
2021University of Chemical Technology and Metallurgy
Journal of Chemical Technology and Metallurgy
2021#56Issue 3643 - 647 pp.
Findings of a study are presented below regarding the formation of ultrafine-grained structure in M1 grade copper under severe plastic deformation (SPD) by high pressure torsion at room temperature. The process was modeled in the Deform 3D package in order to verify the implementation of high-pressure torsion method (HPT) in new matrix. It allowed identifying “weak points” of the process, evaluating stress-strain state of the workpiece at each cycle step, strain intensity obtained in one full cycle of this method, and also required strain force. A laboratory experiment showed that after 8 cycles of deformation, an almost uniform structure with a subgrain size of ~ 0.3 μm forms in the copper. Tensile strength increased from 105 MPa to 380 MPa, elongation decreased from 28 % to 13%.
copper , matrix , mechanical properties , microstructure , stress-strain state
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Rudny Industrial Institute, 50 let Oktyabrya str. 38, Rudny, 111500, Kazakhstan
Karaganda State Industrial University, Republic Ave. 30, Temirtau, 101400, Kazakhstan
Belarusian State Technological University, 13a Sverdlova str., Minsk, 220006, Belarus
Rudny Industrial Institute
Karaganda State Industrial University
Belarusian State Technological University
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