Creep behavior and failure mechanisms of CVI and PIP SiC/SiC composites at temperatures to 1650 °C in air
Journal of the European Ceramic Society, ISSN: 0955-2219, Vol: 41, Issue: 13, Page: 6196-6206
2021
- 31Citations
- 19Captures
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Article Description
Creep properties of 2D woven CVI and PIP SiC/SiC composites with Sylramic™-iBN SiC fibers were measured at temperatures to 1650 °C in air and the data was compared with the literature. Batch-to-batch variations in the tensile and creep properties, and thermal treatment effects on creep, creep parameters, damage mechanisms, and failure modes for these composites were studied. Under the test conditions, the CVI SiC/SiC composites exhibited both matrix and fiber-dominated creep depending on stress, whereas the PIP SiC/SiC composites displayed only fiber-dominated creep. Creep durability in both composite systems is controlled by the most creep resistant phase as well as oxidation of the fibers via cracking matrix. Specimen-to- specimen variations in porosity and stress raisers caused significant differences in creep behavior and durability. The Larson-Miller parameter and Monkman-Grant relationship were used wherever applicable for analyzing and predicting creep durability.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0955221921003976; http://dx.doi.org/10.1016/j.jeurceramsoc.2021.05.059; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85107766619&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0955221921003976; https://dx.doi.org/10.1016/j.jeurceramsoc.2021.05.059
Elsevier BV
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