Abstract
The effect of temperature on the shear modulus and low-frequency internal friction of pure copper and a Cu-0.17 wt % Zr alloy subjected to equal channel angular pressing (ECAP) is studied in the temperature range 100–550 K. In both materials, ECAP significantly decreases the shear modulus. It is found that the temperature dependences of the shear modulus of the alloy and pure copper are qualitatively similar and those of the internal friction are markedly different. Possible mechanisms responsible for the anomalous behavior of the elastic moduli and internal friction in the materials subjected to ECAP are discussed.
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R. Z. Valiev, M. J. Zehetbauer, Y. Estrin, et al., “The innovation Potential of Bulk Nanostructured Materials,” Advanced Eng. Mater. 9, 527–532 (2007).
R. Z. Valiev, R. K. Islamgaliev, and I. V. Alexandrov, “Bulk Nanostructured Materials from Severe Plastic Deformation,” Progress in Material Science 45, 103–189 (2000).
H. A. Akhmadeev, R. Z. Valiev, N. P. Kobelev, et al., “Elastic Properties of Copper with Submicrocrystalline Structure,” Fiz. Tverd. Tela (St. Petersburg) 34, 3155–3160 (1992).
N. A. Akhmadeev, N. P. Kobelev, R. R. Milyukov, et al., “The effect of Heat treatment on the Elastic and Dissipative Properties of Copper with the Submicrocrystalline Structure,” Acta Met. Et Mat. 41, 1041–1046 (1993).
A. B. Lebedev, Y. A. Burenkov, A. E. Romanov, et al., “Softening of the Elastic modulus in Submicrocrystalline Copper,” Mater. Sci. Eng. A 203, 165–170 (1995).
N. P. Kobelev, E. L. Kolyvanov, and Y. Estrin, “Temperature Dependence of Sound Attenuation and Shear Modulus of Ultrafine-grained Copper Produced By Equal Channel Angular Pressing,” Acta Mater. 56, 1473–1481 (2008).
A. B. Lebedev, S. A. Pulnev, V. L. Kopylov, et al., “Thermal Mobility of Submicrocrystalline Copper and Cu:ZrO2 Composite,” Scripta Materialia 35, 1077–1081 (1996).
A. Vinogradov, V. Patlan, Y. Suzuki, et al., “Structure and Properties of Ultrafine-grained Cu-Cr-Zr Alloys Produced by Equal-Channel Angular Pressing,” Acta Materiala 50, 1639–1651 (2002).
K. Neishi, Z. Horita, and T. G. Langdon, “Achieving Superplasticity in Ultrafine-grained Copper: Influence of Zn and Zr Additions,” Mater. Sci. Eng. A 352, 129–135 (2003).
Y. Amouyal, S. V. Divinski, Y. Estrin, and E. Rabkin, “Short-Circuit Diffusion in an Ultrafine-grained Copper-Zirconium Alloy Produced by Equal-Channel Angular Pressing,” Acta Materiala 55, 5968–5979 (2007).
Y. Estrin, R. J. Hellmig, M. Janecek, et al., “Mechanical and Corrosion Properties of ECAP Processed Copper,” in Proceedings of International Conference Copper′06, France (Wiley, Weinheim, 2006), pp. 27–33.
A. Nowick and B. Berry, Inelastic Relaxation in Crystalline Solids (Academic, New York, 1972; Atomizdat, Moscow, 1975).
N. P. Kobelev, E. L. Kolyvanov, and V. A. Khonik, “Irreversible Structural Relaxation in a Bulk Pd-Cu-Ni-P Metallic Glass,” Phys. Solid States 48(3), 389–395 (2006).
V. A. Khonik and N. P. Kobelev, “Relation between the Shear Viscosity and Heating Rate in Metallic Glasses below the Glass Transition,” Physical Review B 77, 132203–3 (2008).
R. Kužel, V. Cherkaska, Z. Matěj, M. Janeček, J. Čižek, and M. Dopita, “Structural Studies of Submicrocrystalline Copper and Copper Composites by Different Methods,” Zeitschrift für Kristallographie Supplements 27, 73–80 (2008).
T. Ungar and G. Tichi, “The Effect of Dislocation Contrast on X-ray Line Profile in Untextured Polycrystals,” Physica Status Solidi (a) 171, 425–434 (1999).
J. Gobicza, N. H. Nam, R. J. Hellmig, et al., “Microstructure of Severely Deformed Metals Determined by X-ray Peak Profile Analysis,” J. Alloys Comp. 378, 248–252 (2004).
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Original Russian Text © E.L. Kolyvanov, N.P. Kobelev, Yu. Estrin, 2010, published in Deformatsiya i Razrushenie Materialov, 2010, No. 4, pp. 1–6.
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Kolyvanov, E.L., Kobelev, N.P. & Estrin, Y. Shear modulus and internal friction in a Cu-0.17% Zr alloy and pure copper subjected to equal-channel angular pressing. Russ. Metall. 2011, 279–284 (2011). https://doi.org/10.1134/S0036029511040082
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DOI: https://doi.org/10.1134/S0036029511040082