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A study of the influence of grain boundaries on short crack growth during varying load using a dislocation technique

Bjerkén, Christina LU and Melin, Solveig LU (2004) In Engineering Fracture Mechanics 71(15). p.2215-2227
Abstract
The propagation of short cracks in the neighbourhood of grain boundaries have been investigated using a technique were the crack is modelled by distributed dislocation dipoles and the plastic deformation is represented by discrete dislocations. Discrete dislocations are emitted from the crack tip as the crack grows. Dislocations can also nucleate at the grain boundaries. The influence on crack growth characteristics of the distance between the initial crack tip and the grain boundary has been studied. It was found that crack growth rate is strongly correlated to the dislocation pile-ups at the grain boundaries. (C) 2004 Elsevier Ltd. All rights reserved.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
boundary, grain, short crack growth, dislocation dipoles, discrete dislocations, dislocation nucleation
in
Engineering Fracture Mechanics
volume
71
issue
15
pages
2215 - 2227
publisher
Elsevier
external identifiers
  • wos:000221991300007
  • scopus:2142847258
ISSN
1873-7315
DOI
10.1016/j.engfracmech.2003.10.006
language
English
LU publication?
yes
id
2942190d-94a8-47ef-8b64-35e5e714657e (old id 275684)
date added to LUP
2007-08-02 10:50:20
date last changed
2017-03-26 04:17:18
@article{2942190d-94a8-47ef-8b64-35e5e714657e,
  abstract     = {The propagation of short cracks in the neighbourhood of grain boundaries have been investigated using a technique were the crack is modelled by distributed dislocation dipoles and the plastic deformation is represented by discrete dislocations. Discrete dislocations are emitted from the crack tip as the crack grows. Dislocations can also nucleate at the grain boundaries. The influence on crack growth characteristics of the distance between the initial crack tip and the grain boundary has been studied. It was found that crack growth rate is strongly correlated to the dislocation pile-ups at the grain boundaries. (C) 2004 Elsevier Ltd. All rights reserved.},
  author       = {Bjerkén, Christina and Melin, Solveig},
  issn         = {1873-7315},
  keyword      = {boundary,grain,short crack growth,dislocation dipoles,discrete dislocations,dislocation nucleation},
  language     = {eng},
  number       = {15},
  pages        = {2215--2227},
  publisher    = {Elsevier},
  series       = {Engineering Fracture Mechanics},
  title        = {A study of the influence of grain boundaries on short crack growth during varying load using a dislocation technique},
  url          = {http://dx.doi.org/10.1016/j.engfracmech.2003.10.006},
  volume       = {71},
  year         = {2004},
}