Abstract
The statistics of the jumplike plastic deformation of a Cu–Be alloy under the conditions of a low-temperature unstable plastic flow is studied experimentally. At a high strain rate, the parameters of the load jumps are found to be related by power laws, which corresponds to a scale-invariant behavior. A comparison with the data obtained for another mechanism of plastic instability, namely, the Portevin–Le Chatelier effect, points to the existence of universal laws governing the dynamics of a dislocation ensemble in the conditions of plastic instability.
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References
G. Nicolis and I. Prigogine, Self-Organization in Non-Equilibrium Systems (Wiley, New York, 1977; Mir, Moscow, 1979).
G. A. Malygin, Usp. Fiz. Nauk 169, 979 (1999).
L. P. Kubin, C. Fressengeas, and G. Ananthakrishna, in Dislocations in Solids, Ed. by F. R. N. Nabarro and J. P. Hirth (Elsevier, 2001), Vol. 11.
O. V. Klyavin, Physics of the Crystal Plasticity at Helium Temperatures (Nauka, Moscow, 1987).
M. A. Lebyodkin, Y. Bréchet, Y. Estrin, and L. P. Kubin, Phys. Rev. Lett. 74, 4758 (1995).
G. Ananthakrishna, C. Fressengeas, M. Grosbras, et al., Scr. Metall. Mater. 32, 1731 (1995).
M. A. Lebyodkin and L. R. Dunin-Barkovskii, Zh. Éksp. Teor. Fiz. 113, 1816 (1998) [JETP 86, 993 (1998)].
M. A. Lebyodkin, L. R. Dunin-Barkowskii, Y. Brechet, et al., Acta Mater. 44, 2529 (2000).
M. S. Bharathi, M. A. Lebyodkin, G. Ananthakrishna, et al., Phys. Rev. Lett. 87, 165508 (2001); Acta Mater. 50, 2813 (2002).
D. Ruelle and F. Takens, Commun. Math. Phys. 20, 167 (1971).
P. Bak, C. Tang, and K. Wiesenfeld, Phys. Rev. A 38, 364 (1988).
M. A. Lebyodkin, L. R. Dunin-Barkovskii, V. S. Bobrov, and V. Gröger, Scr. Metall. Mater. 33, 773 (1995).
J. Kertész and L. B. Kiss, J. Phys. A 23, L433 (1990).
J. Ganne, Usp. Fiz. Nauk 89, 147 (1966).
S. N. Komnik and V. V. Demirski, Cryst. Res. Technol. 19, 863 (1984).
G. A. Malygin, Fiz. Met. Metalloved. 63, 864 (1987).
Z. Troyanová, V. Gröger, J. Stelzhammer, and G. Bischof, Mater. Sci. Eng. A 234–236, 449 (1997).
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Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 76, No. 10, 2002, pp. 714–718.
Original Russian Text Copyright © 2002 by Lebyodkin, Dunin-Barkovski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Lebedkina.