The dissociated properties of dislocation in two-dimensional triangular lattice

• Authors: Wu Xiaozhi , Wang Shaofeng , Zhang Huili
• Languages of publication: EN

Abstracts

EN

The dissociated core structure of dislocation in two-dimensional triangular lattice is determined by the variational method within lattice theory. The dissociation effect leads to a narrower core width of partial dislocations than the compact one. The equilibrium separation between two partial dislocations is not very sensitive to the intrinsic stacking fault energy and there exists deviation from the intrinsic stacking fault energy criterion in the continuous elastic theory of dislocation. The relationship between the equilibrium separation and intrinsic stacking fault energy is analogous in lattice theory and the Peierls-Nabarro model. But the equilibrium separation obtained in lattice theory is wider than that obtained in the Peierls-Nabarro model for the same intrinsic stacking fault energy.

Keywords

EN

core structure; dissociation; variational method; equilibrium separation

Discipline

• 61.72.Bb: Theories and models of crystal defects

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2008
• Volume: 6
• Issue: 3
• Pages: 440-444

Dates

published

1 - 9 - 2008

online

17 - 7 - 2008

Contributors

author

Wu Xiaozhi

• Institute for structure and function, Chongqing University, Chongqing, 400044, P. R. China

author

Wang Shaofeng

• Institute for structure and function, Chongqing University, Chongqing, 400044, P. R. China

author

Zhang Huili

• Institute for structure and function, Chongqing University, Chongqing, 400044, P. R. China

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Identifiers

DOI

10.2478/s11534-008-0053-x