کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1473739 991057 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Diffusion-based and creep continuum damage modelling of crack formation during high temperature oxidation of ZrN ceramics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Diffusion-based and creep continuum damage modelling of crack formation during high temperature oxidation of ZrN ceramics
چکیده انگلیسی

ZrN’s good thermal and mechanical properties make it suitable for many commercial applications including in nuclear fuels. An understanding of its oxidation behaviour is essential to prevent catastrophic failures and ensure it is employed safely in nuclear power plants. Based on available experimental results on oxidation of ZrN in the temperature range 1173–1373 K, a continuum damage mechanics-based combined creep and time-dependent material oxidation model is proposed. The model allows for the development of a surface oxide layer combined with damage due to creep under an applied load. A representative grain structure has been modelled according to ZrN microstructural characteristics in order to allow intergranular cracking and individual oxidation damage rates for grains and grain boundaries. The proposed damage model is implemented as a user subroutine and runs in a coupled temperature-displacement analysis using the commercial finite element software Abaqus. Available data on ZrN are used to validate the capability of the model to predict oxidation damage in ceramics at high temperatures.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 36, Issue 9, August 2016, Pages 2341–2349
نویسندگان
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