Fatigue failure of SUS 304 caused by vibratory cavitation erosion

S. M. Ahmed, Kazuo Hokkirigawa, R. Oba

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

The mechanism of cavitation erosion is investigated in detail for SUS 304 stainless steel, a typical erosion-resistant material. Systematic observations of eroded surfaces and dislodged particles show that the predominant failure mode in cavitation erosion is fatigue. Characteristic features of such failures include (1) packets of slip bands, (2) cracks that nucleate at regions of high stress (strain) concentration, (3) cracks that propagate first at an inclination to the surface and then parallel to the surface, and (4) fatigue striations and 'tire tracks' on the rupture surfaces. These last two features are the most indicative of a fatigue process. It is also deduced that massive voids accompanying pressure shock-rings are the most erosive kind of cavitation.

Original languageEnglish
Pages (from-to)129-137
Number of pages9
JournalWEAR
Volume177
Issue number2
DOIs
Publication statusPublished - 1994 Jan 1
Externally publishedYes

Keywords

  • Cavitation erosion
  • Fatigue
  • SUS 304 stainless steel

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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