TOUGHENING IN METALLIC-GLASS RIBBON REINFORCED GLASS-CERAMIC MATRIX COMPOSITES

The toughening mechanism in a metallic-glass ribbon reinforced glass-c eramic matrix composite was investigated. Significant toughening and r esistance to brittle failure was obtained by incorporating relatively small volume fractions of ribbon reinforcements. The toughness increas e was primarily attributed to ribbon/matrix debonding, pullout, and fr acture. Oxidation of the ribbon surface significantly altered the inte rfacial characteristics of the composite system, and, subsequently, af fected the magnitude of fracture energy of the composites.