Erosion development in AISI 316L stainless steel under pulsating water jet treatment

• DOI: 10.1016/j.jestch.2024.101630
• Publication Date: 2024-01-26T05:39:55Z
• Authors: Sergej Hloch; Jakub Poloprudský; Filip Šiška; Tomáš Babinský; Akash Nag; Alice Chlupová; Tomáš Kruml
• Keywords: Water jet

Erosion of solids by liquid droplets is a phenomenon which compromise between mechanical properties the material and droplet hydrodynamic parameters. While number studies deal with deformation drops, evolution inside has not yet been revealed, mainly from point view time action impinging drops The response AISI 316L was investigated under gradually increasing numbers impingements droplets, volume Vd ≅ 0.9 mm3, generated an ultrasonic pulsating water jet frequency f = 40 kHz 1 to 20 s. surface roughness wear rates were determined using laser profilometer. cross-section selected samples subjected microhardness measurement load 0.150 N in 2D grid, included entire perimeter deformed area. minimal grid groove had dimensions 15 × indents, equal area approximately 450 600 µm. A maximum hardness increase observed at lowest measured depth 30 An 300 µm below surface. hardening deeper subsurface most likely caused shear stress. This shows high degree similitude solid impingements. results indicate that currently accepted theory on development erosion over shortcomings, as demonstrated this work ratio utilised diameter grain size material.