Abstract
The orthotropic, non-linear stress/strain behavior of SCS-6/Ti-6-4 metal matrix composite at room temperature, 204°C and 316°C was investigated experimentally by testing off-axis coupon specimens. A one-parameter plasticity model was used to describe this non-linear behavior. In addition, a micromechanical model assuming elastic fiber and elastic-plastic matrix was used to estimate the fiber/matrix bond strength on the basis of the apparent yield stress obtained from the off-axis test result. A failure criterion was also proposed from which the inplane shear strength of the composite was obtained.
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