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conference paper

Molecular dynamics modeling of cavity strengthening in irradiated iron

Gumbsch, Peter
•
Hafez Haghighat, S.M.  
•
Schaeublin, R.  
2006
Proceeding of the Third International Conference on Multiscale Materials Modeling
MMM Multiscale Materials Modeling, 3rd Int. Conference

One of the most important problems in the field of nuclear industry is the relationship between irradiation-induced damage and the resulting induced mechanical response of the target metal and in particular ferritic base steels. In this work the molecular dynamics is used to simulate the nanoscale interaction between a moving dislocation and a defect, such as a cavity, as void or He bubble. The stress-strain curves are obtained under imposed strain rate condition using the atomic potentials based on the Fe potential of Ackland et al. 1997 for a void and He bubble as a function of He content and temperature. It appears that a 2 nm void is a stronger obstacle than a He bubble at low He contents, whereas at high He contents, the He bubble becomes a stronger obstacle. With increasing temperature the escape stress decreases and at the same time there is increasing degeneracy in the type of interaction.

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Type
conference paper
Author(s)
Gumbsch, Peter
•
Hafez Haghighat, S.M.  
•
Schaeublin, R.  
Date Issued

2006

Publisher place

Freiburg-Germany

Journal
Proceeding of the Third International Conference on Multiscale Materials Modeling
Start page

729

End page

732

URL

URL

http://www.mmm2006.org/cms/front_content.php
Peer reviewed

NON-REVIEWED

Written at

EPFL

EPFL units
SPC  
Event nameEvent placeEvent date
MMM Multiscale Materials Modeling, 3rd Int. Conference

Freiburg-Germany

September 18-22, 2006

Available on Infoscience
May 13, 2008
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/25540
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