A multi-scale approach to radiation-induced segregation at various grain boundaries

We investigated the dependence of radiation-induced segregation (RIS) in austenitic stainless steels on grain boundary orientation by numerical calculations. A new rate equation model for RIS that incorporates the grain boundary sink strength for point defects was developed. The sink strength was de...

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Bibliographic Details
Published inJournal of nuclear materials Vol. 329; pp. 1166 - 1169
Main Authors Sakaguchi, N, Watanabe, S, Takahashi, H, Faulkner, R.G
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.08.2004
Subjects
S0500
M0200
G0300
S0200
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Summary:We investigated the dependence of radiation-induced segregation (RIS) in austenitic stainless steels on grain boundary orientation by numerical calculations. A new rate equation model for RIS that incorporates the grain boundary sink strength for point defects was developed. The sink strength was determined as functions of misorientation angle and Σ values using interaction energies of vacancy near grain boundaries as determined by molecular dynamics (MD) and statics (MS). It was shown that the calculated results can reproduce the experimental data obtained by electron and proton irradiation experiments. The good agreement supports the validity of the present model.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2004.04.268