The impact of ultra high pressure water jetting on the near surface microstructure of type 304L stainless steel

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The impact of Ultra High Pressure Water Jet (UHPWJ) treatments on the near-surface microstructure of type 304L stainless steel as used in the nuclear industry is investigated. Samples water jetted at a 45° incident angle developed tensile surface residual stress; a 90° incident angle resulted in compressive residual stress. Both incident angles caused a reduction in grain size in the near-surface microstructure. The 45° treatment also resulted in an increase in surface roughness and a higher net mass loss from the steel. Assessment of the stainless steel chemical composition supported removal of the chromium rich surface passive film.

Bibliographical metadata

Original languageEnglish
Title of host publication24th International Conference on Water Jetting 2018
Publication statusPublished - 4 Sep 2018