Steady state creep and material parameters in a rotating disc of Al–SiCP composite

The steady state creep in a rotating disc made of isotropic aluminium–silicon carbide particulate composite has been investigated in the present study. The creep behaviour of the composite has been described by Sherbyʹs constitutive model. The creep parameters in the law have been determined using regression equations developed on the basis of available experimental results. The radial and tangential stresses and steady state creep rates in the disc have been calculated and presented for various combinations of material parameters (like particle size and particle content) and temperatures. The study revealed that for given operating conditions, the strain rates in the disc can be controlled by selecting optimum particle content and/or particle size of the reinforcement.