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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 Termodinàmica Plasticitat Dislocations in crystals Statistical physics Condensed matter Thermodynamics Dislocations in crystals Condensed matter Plasticity |
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 http://dx.doi.org/10.1103/PhysRevB.64.224102 |
It is part of: | Physical Review B, 2001, vol. 64, , núm. 22, p. 224102-1-224102-9 |
URI: | http://hdl.handle.net/2445/10871 |
Related resource: | http://dx.doi.org/10.1103/PhysRevB.64.224102 |
ISSN: | 0163-1829 |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
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