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A model for solid-particle erosion behavior of ductile alloys is presented. The model incorporates the mechanical properties of the alloys at the deformation conditions associated with solid-particle erosion processes (i.e., temperature and strain-rate conditions), as well as the evolution of these properties during the erosion-induced deformations. An erosion parameter was formulated based on consideration of the energy loss during erosion and incorporates the material's hardness, along with the high-strain-rate stress-strain response of the alloy. This erosion parameter shows a good correlation to experimentally measured erosion rates for a variety of industrially important materials. A methodology is presented to determine the proper mechanical properties to incorporate into the erosion parameter based on a physical model of the erosion mechanism in ductile materials.

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