Abstract

Carbon-fibre/titanium-matrix composites are produced by a liquid-phase fabrication route from the Ti-Ti 5Si 3 eutectic, which has a sufficiently low melting temperature, as an intermediate phase. Composites of layered structure with relatively ductile titanium layers that shield the brittle layers containing carbon fibres in the Ti-Ti 5Si 3 eutectic, are produced in this way. An essential feature of such a composite structure is the thin titanium carbide interface which envelopes a fibre. This influences the mechanical properties of the composites, enhancing the elastic moduli and lowering the strength, the latter being acceptably small. High-temperature strength and creep strength appear to be better than those of ordinary titanium alloys.

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