Abstract
The results of a theoretical study on the influence of strength of interphase boundaries in metal-ceramic composite on macroscopical characteristics of composite response such as strength, deformation capacity, fracture energy and fracture pattern are presented. The study was conducted by means of computer-aided simulation by means of movable cellular automaton method taking account of a developed "mesoscopical" structural model of particle-reinforced composite. The strength of interphase boundaries is found to be a key structural factor determining not only the strength properties of metal-ceramic composite, but also the pattern and rate of fracture. The principles for achievement of the high-strength values of particle/binder interfaces in the metal-ceramic composition due to the formation of the wide transition zones (areas of variable chemical composition) at the interphase boundaries are discussed. Simulation results confirm that such transition zones provide a change in fracture mechanism and make the achievement of a high-strength and a high deformation capacity of metal-ceramic composite possible.
| Original language | English |
|---|---|
| Pages (from-to) | 1025-1034 |
| Number of pages | 10 |
| Journal | Journal of Materials Science and Technology |
| Volume | 29 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 1 Nov 2013 |
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Keywords
- Discrete element based analysis
- Fracture pattern
- Interphase boundaries
- Metal-ceramic composites
- Particle-reinforced composite
- Strength and fracture energy
ASJC Scopus subject areas
- Ceramics and Composites
- Mechanics of Materials
- Mechanical Engineering
- Polymers and Plastics
- Metals and Alloys
- Materials Chemistry