The effect of erodent particle hardness on the erosion of stainless steel

The effect of particle hardness on the erosion of stainless steel has been studied with fine particles at low impacting velocities with two experimental apparatuses, submerged configuration with slurry mix and mist flow test with solid particles entrained in the droplets. Particle concentration was...

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Bibliographic Details
Published in:Wear 2015-05, Vol.332-333, p.1098-1103
Main Authors: Arabnejad, H., Shirazi, S.A., McLaury, B.S., Subramani, H.J., Rhyne, L.D.
Format: Article
Language:English
Subjects:
CFD
Computational fluid dynamics
Correlation
Droplets
Erosion
Hardness
Particle impact
PIV
Silicon carbide
Solid particle
Stainless steel
Stainless steels
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Summary:The effect of particle hardness on the erosion of stainless steel has been studied with fine particles at low impacting velocities with two experimental apparatuses, submerged configuration with slurry mix and mist flow test with solid particles entrained in the droplets. Particle concentration was 1% by mass and the tests have been run for 72h. The testing particles include iron powder, calcite, barite, hematite, magnetite, silica flour, alumina and silicon carbide which are smaller than 40µm with Vickers׳s hardness of 65–3000kgfmm−2. A Particle Image Velocimeter (PIV) is used to measure droplet size and velocity for air/water tests, and Computational Fluid Dynamics (CFD) with particle tracking scheme is implemented to estimate the particle impact velocities for both cases. The measured erosion ratio was consistent for most of the particles in the two testing configurations. It was observed that erosion ratio increases with increasing particle hardness when target material is harder than the particle and does not change considerably after a point where the particle is hard enough to keep its integrity during impact. A correlation has been proposed to correlate erosion ratio (mass of material loss/mass of particles) to the particle hardness by considering the effect of particle impact velocity and angularity of the particles. •The effect of erodent particle properties on the erosion of SS-316 is studied.•The tests have been conducted in two configurations, submerged and mist flow.•Erosion has been correlated to particle hardness.•The effect of particle angularity and impact velocity is considered.
ISSN:0043-1648
1873-2577
DOI:10.1016/j.wear.2015.01.017