A three-dimensional meso-scale computer modeling for bubble growth in metals

A new meso-scale three-dimensional computer model has been proposed to enhance the modeling capability of the bubble growth in metals, particularly helium bubble growth under conditions of post-irradiation annealing. We assume that the bubble growth is modeled by a process driven by energy minimizat...

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Bibliographic Details
Published in:Modelling and simulation in materials science and engineering 2008-07, Vol.16 (5), p.055003-055003 (13)
Main Authors: Suzudo, T, Kaburaki, H, Itakura, M, Wakai, E
Format: Article
Language:English
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Summary:A new meso-scale three-dimensional computer model has been proposed to enhance the modeling capability of the bubble growth in metals, particularly helium bubble growth under conditions of post-irradiation annealing. We assume that the bubble growth is modeled by a process driven by energy minimization of the surface energy and thermal fluctuation within the framework of a Monte Carlo simulation method. We found that it is possible to simulate growing bubbles following the ideal gas law and in equilibrium with the surface tension. The simulation results show good agreement with some experimental evidence, in particular, of the log-normal bubble-size distribution. The extension of the model to the bubble growth on grain boundaries with reference to helium embrittlement has succeeded in reproducing a particular bubble shape observed in experiments.
ISSN:0965-0393
1361-651X
DOI:10.1088/0965-0393/16/5/055003