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Gewählte Publikation:

Fonte, M.A., Stanzl-Tschegg, S.E., Holper, B., Tschegg, E.K., Vasudevan, A.K..
(2001): The microstructure and environment influence on fatigue crack growth in 7049 aluminium alloy at different load ratios
International Journal of Fatigue, 23, 311-317

The role of microstructure and environmental influence on fatigue crack has been investigated on a high strength 7049 aluminium alloy, artificially aged to underaged (UA) and overaged (OA) microstructures with approximately the same yield strength properties, but differing in the mode of slip deformation. The UA alloy deforms by planar slip while the OA alloy by wavy slip. Crack growth measurements were performed at constant load ratios, between 0.8 and -1, in ambient air and vacuum. The influence of load ratio is discussed in terms of slip deformation mechanisms, microstructure, and the influence of environment using die two intrinsic parameters, DeltaK and K-max. (C) 2001 Elsevier Science Ltd. All rights reserved.
Autor*innen der BOKU Wien:
Tschegg Stefanie

Find related publications in this database (Keywords)
fatigue crack growth
near-threshold fatigue
Delta K-th
corrosion fatigue
slip mode
load ratio
7049 and 7075 alloys

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