Journal article
Grain growth and strength degradation of SiC monofilaments at high temperatures
Journal of materials science, v 31(23), pp 6119-6123
01 Dec 1996
Abstract
The microstructural stability of SCS-6 SiC monofilaments was determined by measuring the average grain size, tensile strength and critical length of the fibres as a function of various annealings in vacuum (approximate to 0.1 Pa) at different temperatures (1400-1600 degrees C). The average grain size, calculated from X-ray diffraction line broadening, increased from 23 nm for the as-received fibres to 46 nm for fibres annealed for 2 h at 1600 degrees C. The corresponding tensile strength measured at room temperature dropped from 3.6 GPa for the as-received fibres to approximate to 2 GPa for the treated fibres. Simultaneously, the average critical lengths, measured using the glass-slide technique decreased from 0.37 mm for the as-received fibres to an average of 0.23 mm for the heat-treated fibres. The degradation of the mechanical properties was attributed to a combination of coarsening of the beta-SiC grains as well as interactions with the annealing environment, namely the vacuum hot-press chamber.
Metrics
Details
- Title
- Grain growth and strength degradation of SiC monofilaments at high temperatures
- Creators
- A Elkind - Drexel UniversityM W Barsoum - Drexel University
- Publication Details
- Journal of materials science, v 31(23), pp 6119-6123
- Publisher
- Taylor & Francis
- Number of pages
- 5
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:A1996VZ40700002
- Scopus ID
- 2-s2.0-0030421492
- Other Identifier
- 991019168587804721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Materials Science, Multidisciplinary