The Fatigue and Impact Resistance of Dual-Matrix Boron-Aluminum Composites.
MIDWEST RESEARCH INST KANSAS CITY MO
Pagination or Media Count:
The effects of a soft, plastic interface zone and of heat treatments on the axial fatigue resistance and on the Charpy impact behavior of boron-6061 aluminum composites were determined. Interfacial microstructures and composite fatigue resistance were compared with those previously determined for current, state-of-the-art boron-6061 aluminum composites. It was concluded that a matrix crack-tip stresses are relatively unimportant in determining the axial fatigue resistance of boron-aluminum composites, b a soft, plastic interface zone will only be effective in improving fatigue resistance in composites with a high-strength metal matrix having poor toughness, and c phase-boundary migration into boron filaments may occur during boron-aluminum interdiffusion instead of inert-marker movement into the aluminum matrix. Author
- Laminates and Composite Materials