EFFECT OF NOTCH GEOMETRY ON SHORT FATIGUE-CRACK GROWTH IN 8090-AL-LI ALLOY

Authors
SHAN ZH WANG ZG ZHANG Y
Citation
Zh. Shan et al., EFFECT OF NOTCH GEOMETRY ON SHORT FATIGUE-CRACK GROWTH IN 8090-AL-LI ALLOY, Journal of Materials Science, 32(17), 1997, pp. 4673-4677
Citations number
10
Categorie Soggetti
Material Science
Journal title
Journal of Materials Science → ACNP
ISSN journal
00222461
Volume
32
Issue
17
Year of publication
1997
Pages
4673 - 4677
Database
ISI
SICI code
0022-2461(1997)32:17<4673:EONGOS>2.0.ZU;2-Z
Abstract
The short-crack propagation behaviour of 8090 AI-LI alloy under differ ent ageing conditions has been investigated. The effect of notch geome try on short fatigue crack growth was also studied. The results show t hat the geometrical configuration of the notch significantly affects t he growth behaviour of the short crack, the growth rates of notched sh ort cracks being much higher than those of long cracks at the same str ess intensity factor range Delta K level. The orientations of the spec imens had a stronger effect an the growth rate of long cracks than on that of short cracks.