Thermal activation analysis of the dislocation unpinning from stoppers in KCI crystals
Keywords:
elastic deformation, activation energy, activation volume, binding energy
Abstract
The effect of temperature and elastic static loading on the dislocations unpinning from stoppers in KCl crystals has been studied. Dependence of the stress of the activation energy on activation volume of the studied process has been determined, value of the energy of the dislocation binding with the pinning center has been calculated. Based on the comparison of the power law of interaction of dislocations and the stopper with the existing theoretical laws, there has been made a conclusion about the possible nature of the dislocation blocking by pinning centers in these crystals.
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References
M.A.Krishtal, S.A.Golovin, I.VTroitskij. Fizika metallov i metallovedenie, 35, 632 (1973).
V.I.Startsev, V.Ya.Illichov, V.V.Pustovalov. Plasticity and Strength of Metals and Alloys at Low Temperatures, Metallurgiya, Moscow (1975) [in Russian].
В.М. Чернов. Flzlka Tverd. Tela, 15, 4, 1159 (1973).
S.P.Nikanorov, B.K.Kardachev. Elasticity and Dislocation Inelasticity of Crystals, Nauka, Moscow (1985) [in Russian].
M.A.Krishtal, S.A.Golovin. Internal Friction and Structure of Metals, Metallurgiya, Moscow (1976) [in Russian].
V.L.Indenbom, V.M.Chernov. Mechanisms of Relaxation Phenomena in Solids, Nauka, Moscow (1972) [in Russian].
A.Granato, K.Lucke. String model of dislocation and dislocation absorption of ultrasound. Physical acoustics, Mir, Moscow (1969).
A.M.Petchenko. Fizika Tverd. Tela, 33, 1541 (1991).
G.A. Petchenko. Functional materials, 8, 3, 483 (2001).
G.A. Petchenko, A.M. Petchenko. Functional materials, 22, 3, 293 (2015).
R.Truell, Ch.Elbaum, B.Chik, Ultrasound Methods in solid state physics, Mir, Moscow (1972) [in Russian].
A.M.Petchenko, G.A.Petchenko. Ukrainian J. Physics, 55, 716 (2010).
V.I.Startsev, V.Ya.Illichov, V.V.Pustovalov. Plasticity and Strength of Metals and Alloys at Low Temperatures, Metallurgiya, Moscow (1975) [in Russian].
В.М. Чернов. Flzlka Tverd. Tela, 15, 4, 1159 (1973).
S.P.Nikanorov, B.K.Kardachev. Elasticity and Dislocation Inelasticity of Crystals, Nauka, Moscow (1985) [in Russian].
M.A.Krishtal, S.A.Golovin. Internal Friction and Structure of Metals, Metallurgiya, Moscow (1976) [in Russian].
V.L.Indenbom, V.M.Chernov. Mechanisms of Relaxation Phenomena in Solids, Nauka, Moscow (1972) [in Russian].
A.Granato, K.Lucke. String model of dislocation and dislocation absorption of ultrasound. Physical acoustics, Mir, Moscow (1969).
A.M.Petchenko. Fizika Tverd. Tela, 33, 1541 (1991).
G.A. Petchenko. Functional materials, 8, 3, 483 (2001).
G.A. Petchenko, A.M. Petchenko. Functional materials, 22, 3, 293 (2015).
R.Truell, Ch.Elbaum, B.Chik, Ultrasound Methods in solid state physics, Mir, Moscow (1972) [in Russian].
A.M.Petchenko, G.A.Petchenko. Ukrainian J. Physics, 55, 716 (2010).
Published
2016-12-28
How to Cite
Petchenko, G. A., & Petchenko, A. M. (2016). Thermal activation analysis of the dislocation unpinning from stoppers in KCI crystals. Journal of V. N. Karazin Kharkiv National University. Series Physics, (23), 28-31. Retrieved from https://periodicals.karazin.ua/physics/article/view/7769
Section
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