Khan, S.
, Zbib, H.
and Hughes, D.
(2008),
Multi-Scale Dislocation Dynamics Plasticity: Application to Frank's Dislocation Boundaries, To Be Determined
(Accessed April 3, 2025)
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Multi-Scale Dislocation Dynamics Plasticity: Application to Frank's Dislocation Boundaries
Published
Author(s)
, H M. Zbib, D A. Hughes
Abstract
Experimentally observed Frank's dislocation boundaries in fcc single crystal are analyzed using a multi-scale discrete dislocation plasticity model. It is shown that use of the plausible model boundary conditions smoothes out the 'hump' in the self-stress field of the dislocation boundary rendering its behaviour closer to that of a theoretical infinite dislocation boundary. The relaxed dislocation boundaries show uniform dislocation networks, stabilized by formation of junctions and dipoles. The interaction behaviour of an extrinsic dislocatin with a dislocation boundary is discussed using a new approach, and a potential relationship is explored between the applied stress and dislocation boundaries' stress field.Citation
To Be Determined
Pub Type
Journals
Keywords
dislocation dynamics, dislocations, Frank's formula, multi-scale modeling
Citation
Issues
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Created October 16, 2008