Abstract

The elastic properties of cast iron are calculated by treating it as a two-phase composite material comprising anisotropic randomly oriented graphite particles embedded in an iron matrix. Estimates based upon Voigt and Reuss approximations, which represent upper and lower bounds for the graphite influence, are compared with results obtained from a dilute model. The shape of the graphite inclusions is shown to be a more important parameter than previously predicted in existing treatments where isotropic properties are ascribed to the graphite. Finally, a simple model is given to rationalize the good damping observed in flake graphite cast iron.

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