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Grain boundary influence on short fatigue crack growth rate

Hansson, Per LU and Melin, Solveig LU (2010) 2nd Broberg Memorial Symposium 2009 In International Journal of Fracture 165(2). p.199-210
Abstract
The influence from different grain boundary configurations on the crack growth rate of a microstructurally short edge crack, located within one grain and subjected to remote fatigue loading, is studied. The study is performed using a dislocation formulation, were the geometry is described by dislocation dipole elements in a boundary element approach and the plasticity by discrete dislocations, located along specific slip planes in the material. Plane strain and quasi-static conditions are assumed. The crack is assumed to grow in a single shear mechanism due to nucleation, glide and annihilation of discrete dislocations. Different grain boundary configurations in front of the growing crack are considered, including both high angle and low... (More)
The influence from different grain boundary configurations on the crack growth rate of a microstructurally short edge crack, located within one grain and subjected to remote fatigue loading, is studied. The study is performed using a dislocation formulation, were the geometry is described by dislocation dipole elements in a boundary element approach and the plasticity by discrete dislocations, located along specific slip planes in the material. Plane strain and quasi-static conditions are assumed. The crack is assumed to grow in a single shear mechanism due to nucleation, glide and annihilation of discrete dislocations. Different grain boundary configurations in front of the growing crack are considered, including both high angle and low angle grain boundaries. It is shown that both grain boundary configuration and distance between the crack and a grain boundary has a pronounced influence on the crack growth rate. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
short crack, fatigue, grain boundary, crack growth rate
in
International Journal of Fracture
volume
165
issue
2
pages
199 - 210
publisher
Springer
conference name
2nd Broberg Memorial Symposium 2009
external identifiers
  • scopus:77956393024
  • wos:000281680600007
ISSN
0376-9429
DOI
10.1007/s10704-010-9512-7
language
English
LU publication?
yes
id
5d05872d-4d3e-4371-bb4d-7559f207b26f (old id 2539381)
date added to LUP
2012-05-10 15:20:29
date last changed
2018-05-29 09:35:32
@article{5d05872d-4d3e-4371-bb4d-7559f207b26f,
  abstract     = {The influence from different grain boundary configurations on the crack growth rate of a microstructurally short edge crack, located within one grain and subjected to remote fatigue loading, is studied. The study is performed using a dislocation formulation, were the geometry is described by dislocation dipole elements in a boundary element approach and the plasticity by discrete dislocations, located along specific slip planes in the material. Plane strain and quasi-static conditions are assumed. The crack is assumed to grow in a single shear mechanism due to nucleation, glide and annihilation of discrete dislocations. Different grain boundary configurations in front of the growing crack are considered, including both high angle and low angle grain boundaries. It is shown that both grain boundary configuration and distance between the crack and a grain boundary has a pronounced influence on the crack growth rate.},
  author       = {Hansson, Per and Melin, Solveig},
  issn         = {0376-9429},
  keyword      = {short crack,fatigue,grain boundary,crack growth rate},
  language     = {eng},
  number       = {2},
  pages        = {199--210},
  publisher    = {Springer},
  series       = {International Journal of Fracture},
  title        = {Grain boundary influence on short fatigue crack growth rate},
  url          = {http://dx.doi.org/10.1007/s10704-010-9512-7},
  volume       = {165},
  year         = {2010},
}