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Title: Automated identification and indexing of dislocations in crystal interfaces

Abstract

Here, we present a computational method for identifying partial and interfacial dislocations in atomistic models of crystals with defects. Our automated algorithm is based on a discrete Burgers circuit integral over the elastic displacement field and is not limited to specific lattices or dislocation types. Dislocations in grain boundaries and other interfaces are identified by mapping atomic bonds from the dislocated interface to an ideal template configuration of the coherent interface to reveal incompatible displacements induced by dislocations and to determine their Burgers vectors. Additionally, the algorithm generates a continuous line representation of each dislocation segment in the crystal and also identifies dislocation junctions.

Authors:
 [1];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1237570
Report Number(s):
LLNL-JRNL-571612
Journal ID: ISSN 0965-0393
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Modelling and Simulation in Materials Science and Engineering
Additional Journal Information:
Journal Volume: 20; Journal ID: ISSN 0965-0393
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Stukowski, Alexander, Bulatov, Vasily V., and Arsenlis, Athanasios. Automated identification and indexing of dislocations in crystal interfaces. United States: N. p., 2012. Web. doi:10.1088/0965-0393/20/8/085007.
Stukowski, Alexander, Bulatov, Vasily V., & Arsenlis, Athanasios. Automated identification and indexing of dislocations in crystal interfaces. United States. https://doi.org/10.1088/0965-0393/20/8/085007
Stukowski, Alexander, Bulatov, Vasily V., and Arsenlis, Athanasios. Wed . "Automated identification and indexing of dislocations in crystal interfaces". United States. https://doi.org/10.1088/0965-0393/20/8/085007. https://www.osti.gov/servlets/purl/1237570.
@article{osti_1237570,
title = {Automated identification and indexing of dislocations in crystal interfaces},
author = {Stukowski, Alexander and Bulatov, Vasily V. and Arsenlis, Athanasios},
abstractNote = {Here, we present a computational method for identifying partial and interfacial dislocations in atomistic models of crystals with defects. Our automated algorithm is based on a discrete Burgers circuit integral over the elastic displacement field and is not limited to specific lattices or dislocation types. Dislocations in grain boundaries and other interfaces are identified by mapping atomic bonds from the dislocated interface to an ideal template configuration of the coherent interface to reveal incompatible displacements induced by dislocations and to determine their Burgers vectors. Additionally, the algorithm generates a continuous line representation of each dislocation segment in the crystal and also identifies dislocation junctions.},
doi = {10.1088/0965-0393/20/8/085007},
journal = {Modelling and Simulation in Materials Science and Engineering},
number = ,
volume = 20,
place = {United States},
year = {Wed Oct 31 00:00:00 EDT 2012},
month = {Wed Oct 31 00:00:00 EDT 2012}
}

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