The mechanics of subsurface damage in solid particle erosion

Abstract The mechanics of subsurface microvoid formation in solid particle erosion is analyzed. The analysis is performed by finding an approximate elastic-plastic solution to the stresses around subsurface inclusions or hard second-phase particles. The results indicate that void formation occurs in specific regions below the target surface. The effect of impact angle and velocity on the void formation process is also analyzed. The analysis shows that the formation of the greatest possible number of voids coincides with the impingement angle of peak erosion. It is found that void nucleation takes place deeper below the surface at higher impact velocities. The effect of subsurface damage on the erosion process is discussed. It is shown that the number and the interparticle spacings of hard second-phase particles or inclusions can control the erosion rate.

[1]  A. Argon.  Formation of Cavities From Nondeformable Second-Phase Particles in Low Temperature Ductile Fracture , 1976 .

[2]  J. Im,et al.  Cavity formation from inclusions in ductile fracture , 1975 .

[3]  M. C. Shaw,et al.  ON DEFORMATION AT LARGE STRAINS , 1970 .

[4]  A. Austen,et al.  Influence of Hydrostatic Pressure on Void Formation at Hard Particles , 1974 .

[5]  A. Rosenfield.  Criteria for ductile fracture of two-phase alloys , 1968 .

[6]  M. Ashby.  Work hardening of dispersion-hardened crystals , 1966 .

[7]  N. Suh,et al.  Wear of two-phase metals , 1977 .

[8]  B. Avitzur,et al.  The behavior of particles during plastic deformation of metals , 1973 .

[9]  B. Avitzur,et al.  Void Behavior as Influenced by Pressure and Plastic Deformation , 1974 .

[10]  A. Argon,et al.  Separation of second phase particles in spheroidized 1045 steel, Cu-0.6pct Cr alloy, and maraging steel in plastic straining , 1975 .

[11]  K. Easterling,et al.  THE PARTICLE-TO-MATRIX BOND IN DISPERSION-HARDENED AUSTENITIC AND FERRITIC IRON ALLOYS , 1973 .

[12]  K. Easterling,et al.  Effects of Alloying on Structural Stability and Cohesion between Phases in Oxide/Metal Composites , 1972 .

[13]  Percy Williams Bridgman,et al.  Studies in large plastic flow and fracture , 1964 .

[14]  Ian M. Hutchings,et al.  Solid particle erosion of metals: the removal of surface material by spherical projectiles , 1976, Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences.

[15]  J. Bitter,et al.  A study of erosion phenomena , 1963 .

[16]  N. Suh,et al.  The delamination theory of wear , 1973 .

[17]  Nam P. Suh,et al.  Mechanics of crack propagation in delamination wear , 1977 .

[18]  N. Suh,et al.  Mechanics of subsurface void nucleation in delamination wear , 1977 .

[19]  J. Bitter.  A study of erosion phenomena part I , 1963 .

[20]  K. Johnson,et al.  An Analysis of Plastic Deformation in Rolling Contact , 1963 .

[21]  Takehiko Mori,et al.  Cavity formation at the interface of a spherical inclusion in a plastically deformed matrix , 1970 .