Microstructural characterization and tensile behaviour of a 3D braided C/SiC composite fabricated by chemical vapour infiltration

Yiqiang Wang, Litong Zhang, Laifei Cheng, Ma Junqiang

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The microstructure of a 3D C/SiC composite was characterized and the tensile behaviour was investigated in conjunction with acoustic emission (AE) technique. A computer model of the fibre architecture was generated for visualization and further stress analysis. The results show that the stress-strain curves exhibit mostly nonlinear behaviour with four distinguishable regions, which compare well with the AE characteristics. Microstructural observations reveal the superficial matrix cavities and large inter-bundle pores due to the 3D braiding fibre architecture. The failed specimens show ragged fracture surfaces and extensive fibre pullout, as well as interfacial debonding.

Original languageEnglish
Pages (from-to)125-130
Number of pages6
JournalAdvanced Composites Letters
Volume17
Issue number4
DOIs
StatePublished - 2008

Keywords

  • Ceramic matrix composites
  • Fibre architecture
  • Microstructure
  • Tensile behaviour

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