Quasiperiodic tilt boundaries in polycrystalline and nanocrystalline materials: energy and stress fields

Authors
Mikaelyan, KN Ovid'ko, IA Romanov, AE
Citation
Kn. Mikaelyan et al., Quasiperiodic tilt boundaries in polycrystalline and nanocrystalline materials: energy and stress fields, MAT SCI E A, 259(1), 1999, pp. 132-137
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
259
Issue
1
Year of publication
1999
Pages
132 - 137
Database
ISI
SICI code
0921-5093(19990115)259:1<132:QTBIPA>2.0.ZU;2-W
Abstract
The structural geometry of quasiperiodic tilt boundaries (modeled as sequen ces of structural units) in polycrystalline and nanocrystalline materials i s discussed. The energy density of finite-length quasiperiodic tilt boundar ies is calculated in a dislocation-structural-unit model. It is shown that usually the energy density changes when rearrangements of structural units of a quasiperiodic grain boundary with finite extent occur. However, some s pecial rearrangements leave the energy density unchanged. (C) 1999 Elsevier Science S.A. All rights reserved.