Creep analysis in an isotropic FGM rotating disc of Al–SiC composite

Creep behavior of a rotating disc made of isotropic functionally graded materials has been investigated. The disc under investigation is made of a composite containing silicon carbide particles in a matrix of pure aluminium. The steady state creep behavior has been described by Norton’s law. The material parameters of creep vary along the radial distance in the disc due to varying composition and this variation has been estimated by regression fit of the available experimental data. It is concluded that for the assumed linear particle distributions in an isotropic rotating disc, the steady-state tangential and radial creep rates are smaller by almost an order of magnitude compared to that in an isotropic disc with uniform particle distribution.