Effect of tube material on tensile properties of SiC-fibre reinforced sup a_2 alloys

摘要

In SiC-fibre reinforced titanium alloys the brittleness of the matrix limits the mechanical properties of the composites. Using a ductile matrix in composites, for example, Ti-6A1-4V alloy [1-3] or IMI834 alloy [4], in tensile test experiments the properties of the fibres and the matrix are completely exploited: the values for the ultimate tensile strength and Young's modulus are obtained according to the predictions of the rule of mixtures and for the elongation at fracture fibre elongation of nearly 1.3% is measured [3]. In the work reported here we studied the influence of the matrix material surrounding the composite (tube material) on the tensile properties of SiC-SCS-6 fibre reinforced super a2 (Ti-25A1-lONb-3V-lMo) alloys.