Abstract
Changes in the structure and mechanical properties of the low-alloy chromium–zirconium bronze Cu–0.14% Cr–0.04% Zr have been investigated after a high-strain-rate (104–105 s–1) deformation by the method of dynamic channel-angular pressing (DCAP) and following annealings at 300–700°C. A significant increase in the mechanical properties of the investigated bronze after DCAP and after DCAP and subsequent aging at temperatures of 400–450°C has been established. Thus, compared to the initial quenched state the ultimate tensile strength increases by a factor of 2.6 and 2.8 and the yield stress, by a factor of 3.3 and 5.1, respectively, with the retention of satisfactory plasticity. It has been shown that, upon DCAP and subsequent annealings, in the low-alloyed bronze under investigation there occurs a decomposition of the α solid solution with the precipitation of nanosized particles. This leads to a significant strengthening of the bronze and to an increase in its thermal stability compared with the pure copper subjected to DCAP.
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References
N. A. Ol’shanskii, Welding in Mechanical Engineering. A Handbook, Part 1 (Mashinostroenie, Moscow, 1978) [in Russian].
O. E. Osintsev and V. N. Fedorov, Copper and Copper Alloys. Domestic and Foreign Grades. A Handbook (Mashinostroenie, Moscow, Mashinostroenie, Moscow, 2004).
V. R. Barabash and G. M. Kalinin, “Experience in the development and practical use of database on the properties of materials of the ITER internals,” Vopr. At. Nauki Tekhn., Ser. Materialoved. Nov. Mater., No. 2, 450–458 (2006).
A. I. Belyaeva, I. V. Kolenov, A. A. Savchenko, A. A. Galuza, D. A. Aksenov, G. I. Raab, C. N. Faizova, V. S. Voitsenya, V. G. Konovalov, I. V. Ryzhkov, O. A. Skoryk, S. I. Solodovchenko, and A. F. Bar-Damid, “Influence of grain size on resistance to ion sputtering of mirrors from low chromium–zirconium copper alloy,” Vopr. At. Nauki Tekhn., Ser. Thermoyad. Sintez, No. 4, 50–59 (2011).
R. Z. Valiev and I. V. Aleksandrov, Bulk Nanostructural Metal Materials: Production, Structure and Properties (Akademkniga, Moscow, 2007) [in Russian].
A. Vinogradov, V. Patlan, G. Suzuki, K. Kitagawa, and V. I. Kopylov, “Structure and properties of ultra-fine grain Cu–Cr–Zr alloy produced by equal-channel angular pressing,” Acta Mater. 50, 1639–1651 (2002).
D. V. Shangina, N. R. Bochvar, and S. V. Dobatkin, “Structure and properties of Cu–Cr alloys subjected to shear under pressure and subsequent heating,” Russ. Metall. (Metally), No. 11, 1046–1052 (2010).
D. V. Shangina, Yu. M. Maksimenkova, N. R. Bochvar, and S. V. Dobatkin, “Behavior of an ultrafine-grained Cu–Zr alloy in heating,” Russ. Metall. (Metally), No. 11, 1069–1073 (2011).
F. Sennikova, A. A. Davidenko, V. Z. Spuskanyuk, V. Yu. Dmitrenko, and T. A. Zakoretskaya, “Effect of thermomechanicaltreatment on the mechanical and functional properties of Cu–Cr–Zr alloy,” Vopr. Materialoved., No. 4, 35–42 (2013).
N. V. Melekhin and V. N. Chuvildeev, “The effect of equal-channel angular pressing on the particle precipitation in Cu–Cr–Zr alloy,” Vestn. Nizhegorod. Univ., No. 5, 55–61 (2011).
I. Shakhova, Z. Yanushkevich, I. Fedorova, A. Belyakov, and R. Kaibyshev, “Grain refinement in a Cu–Cr–Zr alloy during multidirectional forging,” Mater. Sci. Eng., A 606, 380–389 (2014).
R. K. Islamgaliev, K. M. Nesterov, and R. Z. Valiev, “Structure, strength, and electric conductivity of a Cu-Cr copper-based alloy subjected to severe plastic deformation,” Phys. Met. Metallogr. 116, 209–217 (2015).
E. V. Shorokhov, I. N. Zhglev, and R. Z. Valiev, RF Patent No. 2283717, Bull. Izobr., no. 26 (2006).
V. I. Zel’dovich, E. V. Shorokhov, N. Yu. Frolova, I. N. Zhgilev, A. E. Kheifets, I. V. Khomskaya, and V. M. Gundyrev, “High-strain-rate deformation of titanium using dynamic equal-channel angular pressing,” Phys. Met. Metallogr. 105, 402–408 (2008).
V. I. Zel’dovich, E. V. Shorokhov, N. Yu. Frolova, I. N. Zhgilev, A. E. Kheifets, I. V. Khomskaya, P. A. Nasonov, and A. A. Ushakov, “Structure of titanium after dynamic channel angular pressing at elevated temperatures,” Phys. Met. Metallogr. 108, 347–352 (2009).
I. G. Brodova, I. G. Shirinkina, O. V. Antonova, and E. V. Shorokhov, “Formation of a submicrocrystalline structure upon dynamic deformation of aluminum alloys,” Mater. Sci. Eng., A 503, 103–105 (2009).
I. V. Khomshaya, E. V. Shorokhov, V. I. Zel’dovich, A. E. Kheifets, N. Yu. Frolova, P. A. Nasonov, A. A. Ushakov, and I. N. Zhgilev, “Study of the structure and mechanical properties of submicrocrystalline and nanocrystalline copper produced by high-rate pressing,” Phys. Met. Metallogr. 111, 612–622 (2011).
V. I. Zel’dovich, I. V. Khomskaya, N. Yu. Frolova, A. E. Kheifets, E. V. Shorokhov, and P. A. Nasonov, “Structure of chromium–zirconium bronze subjected to dynamic channel–angular pressing and aging,” Phys. Met. Metallogr. 114, 411–418 (2013).
G. V. Zel’dovich, N. Yu. Frolova, I. V. Khomskaya, A. E. Kheifets, E. V. Shorokhov, and P. A. Nasonov, “Structure and microhardness of chromium–zirconium bronze subjected to severe plastic deformation by dynamic channel-angular pressing and rolling,” Phys. Met. Metalogr. 115, 465–470 (2014).
B. I. Finkel’shtein, Impurities and Defects (Chern. Tsvetn. Metallurgiya, Moscow, 1960).
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Original Russian Text © V.I. Zel’dovich, S.V. Dobatkin, N.Yu. Frolova, I.V. Khomskaya, A.E. Kheifets, E.V. Shorokhov, P.A. Nasonov, 2016, published in Fizika Metallov i Metallovedenie, 2016, Vol. 117, No. 1, pp. 79–87.
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Zel’dovich, V.I., Dobatkin, S.V., Frolova, N.Y. et al. Mechanical properties and the structure of chromium–zirconium bronze after dynamic channel-angular pressing and subsequent aging. Phys. Metals Metallogr. 117, 74–82 (2016). https://doi.org/10.1134/S0031918X16010129
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DOI: https://doi.org/10.1134/S0031918X16010129