Computer Simulation of the Interaction of Junction Disclinations in Nanomaterials with Grain Boundary Vacancies

Ayrat A. Nazarov; Ramil’ T. Murzaev

doi:10.4028/www.scientific.net/SSP.137.1

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Preface

Computer Simulation of the Interaction of Junction Disclinations in Nanomaterials with Grain Boundary Vacancies
p.1

Recent Advances in Determination of the Logarithmic Decrement and the Resonant Frequency in Low-Frequency Mechanical Spectroscopy
p.15

High-Temperature Mechanical Relaxation due to Dislocation Motion inside Dislocation Networks
p.21

High Temperature Mechanical Loss Spectrum of 3Y-TZP Zirconia Reinforced with Carbon Nanotubes or Silicon Carbide Whiskers
p.29

Low Temperature Kinetics of In-Cd Solid Solution Decomposition
p.35

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Computer Simulation of the Interaction of Junction Disclinations in Nanomaterials with Grain Boundary Vacancies

Abstract:

Junction disclinations are important elements of the structure of nanostructured metals produced by severe plastic deformation (SPD). Effect of these defects on the formation energy of vacancies in grain boundaries (GBs) is studied by means of atomistic computer simulations. Estimates based on the calculations of vacancy formation energies suggest that at least two orders of magnitude increase of the GB diffusion coefficient can be expected due to junction disclinations in nanostructured metals.