Title of article :
Quasiperiodic tilt boundaries in polycrystalline and nanocrystalline materials: energy and stress fields
Author/Authors :
Mikaelyan، نويسنده , , K.N. and Ovidʹko، نويسنده , , I.A. and Romanov، نويسنده , , A.E.، نويسنده ,
Pages :
6
From page :
132
To page :
137
Abstract :
The structural geometry of quasiperiodic tilt boundaries (modeled as sequences of structural units) in polycrystalline and nanocrystalline materials is discussed. The energy density of finite-length quasiperiodic tilt boundaries 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 special rearrangements leave the energy density unchanged.
Keywords :
Quasiperiodic grain boundaries , Structural units , Dislocations
Journal title :
Astroparticle Physics
Record number :
2054264
Link To Document :
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