Continuous fibre reinforced titanium and aluminium composites: a comparison

Continuous fibre reinforced metal matrix composites are potential candidates for advanced aerospace systems due to the ever-increasing performance requirements. This paper surveys the processing routes and mechanical properties of unidirectionally reinforced titanium-based (Ti–MMCs) and aluminium-based (Al–MMCs) composites. Due to the high melting point of titanium and its strong chemical reactivity, Ti–MMCs are processed via solid state routes and large diameter fibres are employed. Unlike Ti–MMCs, the low melting point of aluminium enables the fabrication of Al–MMCs via liquid routes and small diameter fibres can be used. The mechanical properties of recently developed Ti–MMCs and Al–MMCs are compared; the influence of the temperature and the loading direction are highlighted.