THE EFFECTIVE THRESHOLD OF FATIGUE-CRACK PROPAGATION IN ALUMINUM-ALLOYS I - THE INFLUENCE OF YIELD STRESS AND CHEMICAL-COMPOSITION

Authors
PIPPAN R
Citation
R. Pippan, THE EFFECTIVE THRESHOLD OF FATIGUE-CRACK PROPAGATION IN ALUMINUM-ALLOYS I - THE INFLUENCE OF YIELD STRESS AND CHEMICAL-COMPOSITION, Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties, 77(4), 1998, pp. 861-873
Citations number
30
Categorie Soggetti
Physics, Applied","Material Science","Physics, Condensed Matter","Metallurgy & Metallurigical Engineering
Journal title
Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties → ACNP
ISSN journal
13642804
Volume
77
Issue
4
Year of publication
1998
Pages
861 - 873
Database
ISI
SICI code
1364-2804(1998)77:4<861:TETOFP>2.0.ZU;2-A
Abstract
The thresholds of effective stress intensity range Delta K-eff th of a recrystallized and cold-rolled aluminium (pure), and aluminium alloys 6061, 7020 and 7075 were studied. A special technique to determine De lta K-eff th very accurately was applied. The measured Delta K-eff th value was about 0.85 M Pa m(1/2) in all alloys. The significant differ ence in the yield stress (it varies between 30 and 630 MPa) and the ch emical composition does not influence Delta K-eff th.