Tailoring the Microstructure of a Metal-Reinforced Ceramic Matrix Composite
| Autor: | O. Sbaizero, G. Pezzotti |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Toughness
Bridging (networking) Materials science Mechanical Engineering chemistry.chemical_element Fracture mechanics Condensed Matter Physics Ceramic matrix composite Microstructure Grain size Fracture toughness chemistry Mechanics of Materials Molybdenum General Materials Science Composite material |
| Zdroj: | Journal of Engineering Materials and Technology. 122:363-367 |
| ISSN: | 1528-8889 0094-4289 |
| DOI: | 10.1115/1.482810 |
| Popis: | Alumina matrix was prepared with varying amounts of metal molybdenum particles of two different grain sizes. R-curves were determined during stable crack propagation and a piezo-spectroscopic technique was used to assess the bridging stresses developed along the crack wake (at the metal/matrix interface) at the critical condition for crack propagation. In both kinds of composites, the toughness monotonically increases with the amount of molybdenum added. In addition, bridging stress and therefore toughness were higher when coarser particles were present. The theoretical R-curves calculated from the discrete (microscopic) bridging stress distribution obtained by in situ Raman spectroscopy were in good agreement with the experimental data. [S0094-4289(00)02003-X] |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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