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Title

Subcritical crack propagation under cyclic and static loading in mullite and mullite-zirconia

AuthorsDavies, Craig K. L.; Guiu, F.; Li, M.; Reece, Michael J.; Torrecillas, Ramón CSIC ORCID CVN
Issue Date1998
PublisherElsevier
CitationJournal of the European Ceramic Society 18(3): 221-227 (1998)
AbstractThe subcritical crack growth behaviour, under both static and cyclic loads, is examined in pure mullite and in a mullite—zirconia composite. It is found that in both materials the crack growth is influenced by the humidity of the testing environment. The crack growth rate dependence on the maximum stress intensity factor in the pure mullite is the same for static and cyclic loading. The presence of monoclinic zirconia particles in the mullite matrix in a ceramic composite enhances the crack growth resistance and produces faster crack growth rates occur under cyclic loading compared to static loading. These results, supported by the microstructural examination of crack profiles and fracture surfaces, are explained in terms of the interaction between the stress field of the zirconia particles and the cracks.
Publisher version (URL)https://doi.org/10.1016/S0955-2219(97)00118-0
URIhttp://hdl.handle.net/10261/223259
DOI10.1016/S0955-2219(97)00118-0
ISSN0955-2219
Appears in Collections:(INCAR) Artículos

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