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Title: Statistical dynamics of dislocation systems: The influence of dislocation-dislocation correlations.
Author: Zaiser, Michael
Miguel López, María del Carmen
Groma, I.
Keywords: Dislocacions en cristalls
Física estadística
Matèria condensada
Dislocations in crystals
Statistical physics
Condensed matter
Dislocations in crystals
Condensed matter
Issue Date: 2001
Publisher: The American Physical Society
Abstract: During plastic deformation of crystalline materials, the collective dynamics of interacting dislocations gives rise to various patterning phenomena. A crucial and still open question is whether the long range dislocation-dislocation interactions which do not have an intrinsic range can lead to spatial patterns which may exhibit well-defined characteristic scales. It is demonstrated for a general model of two-dimensional dislocation systems that spontaneously emerging dislocation pair correlations introduce a length scale which is proportional to the mean dislocation spacing. General properties of the pair correlation functions are derived, and explicit calculations are performed for a simple special case, viz pair correlations in single-glide dislocation dynamics. It is shown that in this case the dislocation system exhibits a patterning instability leading to the formation of walls normal to the glide plane. The results are discussed in terms of their general implications for dislocation patterning.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review B, 2001, vol. 64, , núm. 22, p. 224102-1-224102-9
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ISSN: 0163-1829
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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