TY - JOUR
T1 - Phase-field simulation of irradiated metals
T2 - Part I: Void kinetics
AU - Millett, Paul C.
AU - El-Azab, Anter
AU - Rokkam, Srujan
AU - Tonks, Michael
AU - Wolf, Dieter
N1 - Funding Information:
This work was supported through the INL Laboratory Directed Research and Development program under DOE Idaho Operations Office Contract No. DE-AC07-051D14517V. We also acknowledge support from the DOE/BES funded Computational Materials Science Network (CMSN) project on “Multi-scale simulation of thermo-mechanical processes in irradiated fission-reactor materials.” The authors also gratefully acknowledge technical support from the INL High-Performance Computing group.
PY - 2011/1
Y1 - 2011/1
N2 - We present a phase-field model of void formation and evolution in irradiated metals by spatially and temporally evolving vacancy and self-interstitial concentration fields. By incorporating a coupled set of Cahn-Hilliard and Allen-Cahn equations, the model captures the processes of point defect generation and recombination, annihilation of defects at sinks, as well as void nucleation and growth in the presence of grain boundaries. Illustrative results are presented that characterize the rate of void growth or shrinkage due to supersaturated vacancy or interstitial concentrations, void nucleation and growth kinetics due to cascade-induced defect production, as well as void denuded and peak zones adjacent to grain boundaries.
AB - We present a phase-field model of void formation and evolution in irradiated metals by spatially and temporally evolving vacancy and self-interstitial concentration fields. By incorporating a coupled set of Cahn-Hilliard and Allen-Cahn equations, the model captures the processes of point defect generation and recombination, annihilation of defects at sinks, as well as void nucleation and growth in the presence of grain boundaries. Illustrative results are presented that characterize the rate of void growth or shrinkage due to supersaturated vacancy or interstitial concentrations, void nucleation and growth kinetics due to cascade-induced defect production, as well as void denuded and peak zones adjacent to grain boundaries.
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U2 - 10.1016/j.commatsci.2010.10.034
DO - 10.1016/j.commatsci.2010.10.034
M3 - Article
AN - SCOPUS:78650687312
VL - 50
SP - 949
EP - 959
JO - Computational Materials Science
JF - Computational Materials Science
SN - 0927-0256
IS - 3
ER -