Diffusion-based and creep continuum damage modelling of crack formation during high temperature oxidation of ZrN ceramics

Michele Pettinà, Robert W. Harrison, Luc J. Vandeperre, Farid R. Biglari, Peter Brown, William E. Lee, Kamran Nikbin

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)2341-2349
Number of pages9
JournalJournal of the European Ceramic Society
Volume36
Issue number9
Early online date22 Dec 2015
DOIs
Publication statusPublished - Aug 2016
Externally publishedYes
EventCERMODEL 2015: Modelling and Simulation Meet Innovation in Ceramics Technology - University of Trento, Trento, Italy
Duration: 1 Jul 20153 Jul 2015
http://events.unitn.it/en/cermodel2015 (Link to Conference Details)

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