کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7965542 1514180 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Stability of grain boundary texture during isothermal grain growth in UO2 considering anisotropic grain boundary properties
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
Stability of grain boundary texture during isothermal grain growth in UO2 considering anisotropic grain boundary properties
چکیده انگلیسی
In the present study, mesoscale simulations of grain growth in UO2 are performed using a 2D level set representation of the polycrystal grain boundary network, employed in a finite element setting. Anisotropic grain boundary properties are considered by evaluating how grain boundary energy and mobility varies with local grain boundary character. This is achieved by considering different formulations of the anisotropy of grain boundary properties, for example in terms of coincidence site lattice (CSL) correspondence. Such modeling approaches allow tracing of the stability of a number of characteristic low-Σ boundaries in the material during grain growth. The present simulations indicate that anisotropic grain boundary properties have negligible influence on the grain growth rate. However, considering the evolution of grain boundary character distribution and the grain size distribution, it is found that neglecting anisotropic boundary properties will strongly bias predictions obtained from numerical simulations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 465, October 2015, Pages 664-673
نویسندگان
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