Abstract
A theoretical model describing deformation-distorted (nonequilibrium) high-angle grain boundaries in nanocrystalline and ultrafine-grained materials has been proposed. Within this model, the dislocation structure of the distorted high-angle grain boundaries has been considered as a combination of the standard wall of grain-boundary dislocations and lattice dislocations (nonequilibrium dislocations) trapped from the adjacent grains. The energy characteristics of a system of grain-boundary defects have been calculated. It has been shown that the thickening of a grain boundary due to the coordinated motion of nonequilibrium dislocations is an energetically favorable and barrierless process. The dependences of the thickening on different parameters of the problem have been investigated. Typical values of the thickening are equal to 1.5–2.5 nm, which agrees with the available experimental data.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
I. A. Ovid’ko, Int. Mater. Rev. 50, 65 (2005).
M. Dao, L. Lu, R. J. Asaro, J. T. M. De Hosson, and E. Ma, Acta Mater. 55, 4041 (2007).
C. S. Pande and K. P. Cooper, Prog. Mater. Sci. 54, 689 (2009).
C. C. Koch, I. A. Ovid’ko, S. Seal, and S. Veprek, Structural Nanocrystalline Materials: Fundamentals and Applications (Cambridge University Press, Cambridge, 2007).
Y. Estrin and A. Vinogradov, Acta Mater. 61, 782 (2013).
G. A. Malygin, Phys.—Usp. 54 (11): 1091 (2011).
R. F. Al’mukhametov, L. A. Gabdrakhmanova, I. Z. Sharipov, and Ya. F. Abzgil’din, Phys. Solid State 56 (2): 223 (2014).
O. A. Maslova, F. V. Shirokov, Yu. I. Yuzyuk, M. E. Marssi, M. Jain, N. Ortega, and R. S. Katiyar, Phys. Solid State 56 (2): 310 (2014).
N. V. Tokiy, V. V. Tokiy, A. N. Pilipenko, and N. E. Pis’menova, Phys. Solid State 56 (5): 1002 (2014).
V. A. Moskalenko, V. I. Betekhtin, B. K. Kardashev, A. G. Kadomtsev, A. R. Smirnov, R. V. Smolyanets, and M. V. Narykova, Phys. Solid State 56 (8): 1590 (2014).
S. V. Bobylev and I. A. Ovid’ko, Acta Mater. 88, 260 (2015).
X. Sauvage, G. Wilde, S. V. Divinski, Z. Horita, and R. Z. Valiev, Mater. Sci. Eng., A 540, 1 (2012).
A. P. Sutton and R. W. Balluffi, Interfaces in Crystalline Materials (Oxford University Press, Oxford (1996).
V. I. Vladimirov and A. E. Romanov, Disclinations in Crystals (Nauka, Leningrad, 1986) [in Russian].
J. P. Hirth and J. Lothe, Theory of Dislocations (Wiley, New York, 1982).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © S.V. Bobylev, I.A. Ovid’ko, 2015, published in Fizika Tverdogo Tela, 2015, Vol. 57, No. 10, pp. 2005–2010.
Rights and permissions
About this article
Cite this article
Bobylev, S.V., Ovid’ko, I.A. Thickening of deformation-distorted high-angle grain boundaries in nanomaterials. Phys. Solid State 57, 2059–2065 (2015). https://doi.org/10.1134/S1063783415100054
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063783415100054