Erosion-Oxidation Response of Boiler Grade Steels: A Mathematical Investigation

Abstract

A ductile erosion model embodying the mechanisms of erosion involving cutting wear and repeated plastic deformation has been developed to predict erosion rates of boiler grade steels. The issue of erosion-oxidation interaction has also been addressed to further predict the mass loss resulted from this composite mechanism. A deterministic formalism for the kinetics of oxide-scale growth and a probabilistic approach to characterize the material loss are employed to describe simultaneous actions of hightemperature oxidation and mechanical erosion. The model predictions are in good agreement with the published data.