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Title: Dislocation jamming and Andrade creep
Author: Miguel López, María del Carmen
Vespignani, Alessandro, 1965-
Zaiser, Michael
Zapperi, Stefano
Keywords: Ciència dels materials
Resistència de materials
Dislocacions en cristalls
Materials science
Strength of materials
Dislocations in crystals
Issue Date: 2002
Publisher: American Physical Society
Abstract: We simulate the glide motion of an assembly of interacting dislocations under the action of an external shear stress and show that the associated plastic creep relaxation follows Andrades law. Our results indicate that Andrade creep in plastically deforming crystals involves the correlated motion of dislocation structures near a dynamic transition separating a flowing from a jammed phase. Simulations in the presence of dislocation multiplication and noise confirm the robustness of this finding and highlight the importance of metastable structure formation for the relaxation process.
Note: Reproducció digital del document proporcionada per PROLA i
It is part of: Physical Review Letters, 2002, vol. 89, núm. 16, p. 165501-1-165501-4
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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