Accession Number : AD0738162

Title :   Relation between the Erosion by Solid Particles and the Physical Properties of Metals.

Descriptive Note : Technical rept.,

Corporate Author : ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MASS

Personal Author(s) : Ascarelli,Paolo

Report Date : NOV 1971

Pagination or Media Count : 24

Abstract : The work is an attempt to identify and select those physical properties of materials that can be closely correlated with their resistance to erosion due to solid particle impingement. A simple erosion mechanism which employs the concept of thermal pressure has been used to obtain a very good correlation with available data on erosion of pure metals and their bulk thermal and elastic properties. The erosion resistance of metals at elevated temperatures appears to be sensitive to the temperature dependence of their properties under plastic deformation. A treatment is given in terms of the malleability, that is, the product of shear modulus and isothermal compressibility. The dependence of erosion on the velocity of the impinging particle is also discussed, and it is suggested that strain rate effects in plastic deformation may be contributing to the nonlinear dependence upon kinetic energy. (Author)

Descriptors :   (*METALS, *EROSION), PARTICLES, DUCTILITY, WEAR RESISTANCE, CORRELATION TECHNIQUES, DEFORMATION

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE