Abstract
Commercially pure copper (99.9 wt % Cu) subjected to high-pressure torsion at room temperature is investigated. A relation between the copper structure and temperature–strain-rate conditions has been established. It has been shown that impurity dragging prevents grain growth during postdynamic recrystallization. This has allowed us to determine the conditions under which either the hardening of the deformed material, which is accompanied by a continuous increase in the hardness and structural refinement, or the dynamic recrystallization resulting in the stabilization of the hardness and the average grain size predominantly occurs in commercial-purity copper compared to high-purity copper (99.99 wt %). It has been shown that, under the hardening conditions, the structure of the investigated copper is determined by the true strain, whereas under dynamic recrystallization conditions, by temperature–compensated strain rate.
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References
V. V. Rybin, Severe Plastic Deformations and Fracture of Metals (Metallurgiya, Moscow, 1986) [in Russian].
A. M. Glezer, “On the nature of ultrahigh plastic (megaplastic) strain,” Bull. Russ. Acad. Sci.: Phys. 71, 1722–1730 (2007).
M. V. Degtyarev, T. I. Chashchukhina, L. M. Voronova, A. M. Patselov, and V. P. Pilyugin, “Influence of the relaxation processes on the structure formation in pure metals and alloys under high-pressure deformation,” Acta Mater. 55, 6039–6050 (2007).
X. H. An, Q. Y. Lin, S. D. Wu, Z. F. Zhang, R. B. Figueiredo, N. Gao, and T. G. Langdon, “Significance of stacking fault energy on microstructural evolution in Cu and Cu–Al alloys processed by high-pressure torsion,” Philos. Mag. 91, 3307–3326 (2011).
M. Tikhonova, Y. Kuzminova, A. Belyakov, and R. Kaibyshev, “Nanocrystalline S304H austenitic stainless steel processed by multiple forging,” Mater. Sci., 31, 68–73 (2012).
V. V. Rybin, N. Yu. Zolotorevskii, and E. A. Ushanova, “Fragmentation of crystals upon deformation twinning and dynamic recrystallization,” Phys. Met. Metallogr. 116, 730–744 (2015).
G. S. D’yakonov, S. V. Zherebtsov, M. V. Klimova, and G. A. Salishchev, “Microstructure evolution of commercial-purity titanium during cryorolling,” Phys. Met. Metallogr. 116, 182–188 (2015).
I. A. Ditenberg, A. N. Tyumentsev, A. V. Korznikov, and E. A. Korznikova, “Microstructural evolution of nickel under high-pressure torsion,” Phys. Mesomech. 16, 239–247 (2013).
I. G. Shirinkina, A. N. Petrova, I. G. Brodova, V. P. Pilyugin, and O. V. Antonova, “Phase and structural transformations in the aluminum AMts alloy upon severe plastic deformation using various techniques,” Phys. Met. Metallogr. 113, 170–175 (2012).
E. N. Popova, V. V. Popov, E. P. Romanov, and V. P. Pilyugin, “Effect of the degree of deformation on the structure and thermal stability of nanocrystalline niobium produced by high-pressure torsion,” Phys. Met. Metallogr. 103, 407–413 (2007).
T. I. Chashchukhina, M. V. Degtyarev, M. Yu. Romanova, and L. M. Voronova, “Dynamic recrystallization in copper deformed by shear under pressure,” Phys. Met. Metallogr. 98, 639–647 (2004).
S. S. Gorelik, Recrystallization of Metals and Alloys (Metallurgiya, Moscow, 1978) [in Russian].
T. I. Chashchukhina, M. V. Degtyarev, and L. M. Voronova, “Effect of pressure on the evolution of copper microstructure upon large plastic deformation,” Phys. Met. Metallogr. 109, 201–208 (2010).
Saltykov, S. A., Quantitative Metallography (Metallurgiya, Moscow, 1970) [in Russian].
V. I. Levit and M. A. Smirnov, High-Temperature Thermomechanical Treatment of Austenitic Steels and Alloys (Chelyabinsk. Gos. Tech. Univ., Chelyabinsk, 1995) [in Russian].
T. Sakai and J. J. Jonas, “Dynamic recrystallization: Mechanical and microstructural considerations,” Acta Metall. 32, 189–209 (1984).
N. M. Amirkhanov, R. K. Islamgaliev, and R. Z. Valiev, “Thermal relaxation and grain growth upon isothermal annealing of ultrafine-grained copper produced by severe plastic deformation,” Phys. Met. Metallogr. 86, 296–301 (1998).
T. I. Chashchukhina, L. M. Voronova, M. V. Degtyarev, and D. K. Pokryshkina, “Deformation and dynamic recrystallization in copper at different deformation rates in Bridgman anvils,” Phys. Met. Metallogr. 111, 304–313 (2011).
V. P. Pilyugin, T. M. Gapontseva, T. I. Chashchukhina, L. M. Voronova, L. I. Shchinova, and M. V. Degtyarev, “Evolution of the structure and hardness of nickel upon cold and low-temperature deformation under pressure,” Phys. Met. Metallogr. 105, 409–418 (2008).
V. P. Pilyugin, L. M. Voronova, M. V. Degtyarev, T. I. Chashchukhina, V. B. Vykhodets, and T. E. Kurennykh, “Structure evolution of pure iron upon low-temperature deformation under high pressure,” Phys. Met. Metallogr. 110, 564–573 (2010).
A. M. Glezer, V. N. Varyukhin, A. A. Tomchuk, and N. A. Maleeva, “Nature of high-angle grain boundaries in metals subjected to severe plastic deformation,” Dokl.–Phys. 59, 360–363 (2014).
V. I. Levit, N. A. Smirnova, and L. S. Davydova, “Twinning and grain refinement upon dynamic recrystallization of nickel alloy,” Fiz. Met. Metalloved. 68, 334–341 (1989).
V. Yu. Novikov, Secondary Recrystallization (Metallurgiya, Moscow, 1990) [in Russian].
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Original Russian Text © D.K. Orlova, T.I. Chashchukhina, L.M. Voronova, M.V. Degtyarev, 2015, published in Fizika Metallov i Metallovedenie, 2015, Vol. 116, No. 9, pp. 1001–1008.
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Orlova, D.K., Chashchukhina, T.I., Voronova, L.M. et al. Effect of temperature–strain-rate conditions of deformation on structure formation in commercially pure copper deformed in Bridgman anvils. Phys. Metals Metallogr. 116, 951–958 (2015). https://doi.org/10.1134/S0031918X15090136
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DOI: https://doi.org/10.1134/S0031918X15090136