Fatigue crack growth studies on Cu-strengthened HSLA steels in air and in simulated sea water

Authors
Sivaprasad, S Tarafder, S Ranganath, VR Ray, KK
Citation
S. Sivaprasad et al., Fatigue crack growth studies on Cu-strengthened HSLA steels in air and in simulated sea water, T I INST ME, 53(3), 2000, pp. 333-339
Citations number
32
Categorie Soggetti
Metallurgy
Journal title
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
ISSN journal
09722815 → ACNP
Volume
53
Issue
3
Year of publication
2000
Pages
333 - 339
Database
ISI
SICI code
0972-2815(200006)53:3<333:FCGSOC>2.0.ZU;2-3
Abstract
The influence of simulated sea water vis-a-vis air on fatigue crack growth behaviour in two Cu-strengthened HSLA steels at different R-ratios and freq uencies has been investigated. These studies have been substantiated with c rack closure measurements. The results indicate that the influence of micro structure and R-ratio on FCGR and CFCGR of these steels can be explained pr imarily using crack closure concepts. The effect of frequency on CFCGR is e lucidated through fractographic records of changes in the crack growth mech anisms.