Abstract
Develops a physical model for the nucleation of fatigue cracks in a high strength steel, under high cycle stress corrosion fatigue conditions. A rotating bending fatigue testing machine (Wohler type) is used, the frequency being 4000 cycles/minute and the corrodent being applied via a moistened pad. Results indicate that alumina inclusions are the site of debonding and further fatigue cycling leads to the formation of holes. Examines the effects of other inclusions and second phase particles, and shows that neither play a part in the nucleation of fatigue cracks in this study. Following the formation of surface holes, subsequent fatigue cycling is accompanied by the development of cyclic plastic zones at the equatorial boundaries.
| Original language | English |
|---|---|
| Pages (from-to) | 333-340 |
| Number of pages | 8 |
| Journal | IN: OMAE 1988 HOUSTON, PROC. 7TH INT. CONF. ON OFFSHORE MECHANICS AND ARCTIC ENGINEERING, (HOUSTON, U.S.A.: FEB. 7-12, 1988), |
| Volume | III, New York, U.S.A., Am. Soc. Civ. Engrs., 1988 |
| State | Published - 1988 |
ASJC Scopus subject areas
- General Engineering