Microstructural analysis of the calcium aluminosilicate (CAS) glass-ceramic matrix in SiCf/CAS composites deformed at a high temperature

Yun Mo Sung, Seung Joon Hwang

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Abstract

The calcium aluminosilicate (CAS: anorthite) glass-ceramic matrix materials in the SiCf/CAS composites deformed in compression at a high temperature were analyzed for microstructures. The matrix region right above the top of the SiC fiber (θ ∼ 0°) showed high density of dislocations as well as twins. On the other hand, the matrix region remote from the top of the SiC fiber (θ ∼ 90°) showed only a twinned structure. This experimental result was compared with the Meyer et al.'s mechanical modeling indicating that the interfacial traction of the matrix region right on the top of the fiber is significantly high compared to the remote stress and thus it rate limits the creep deformation of the composite.

Original languageEnglish
Pages (from-to)5255-5258
Number of pages4
JournalJournal of Materials Science
Volume33
Issue number21
Publication statusPublished - 1998 Dec 1
Externally publishedYes

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ASJC Scopus subject areas

  • Materials Science(all)

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