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Fatigue Behaviour of the Al-Li alloy 8090 compared to 2024

✍ Scribed by Dr.-Ing. M. Peters; Ing. (grad.) V. Bachmann; Dr.-Ing. K. Welpmann

Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
871 KB
Volume
18
Category
Article
ISSN
0933-5137

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✦ Synopsis

The high cycle fatigue and the fatigue crack propagation behaviour of the new Al-Li alloy 8090 were evaluated on 25 mm plate material and compared to the conventional high strength Al alloy 2024. The investigation covered changes of test direction, R-ratio and environment. The results revealed that for most conditions the Al-Li alloy proved to be equivalent or better than the conventional Al alloy.

Das Errnudungsverhalten der

Al-Li-Legierung 8090 irn Vergleich zu 2024* Das Langzeitermudungs-und Ermiidungsriflausbreitungsverhalten der neuen Al-Li-Legierung 8090 wurde an 25 mm dickem Plattenmaterial ermittelt und mit der konventionellen hochfesten Al-Legierung 2024 verglichen. Hierbei wurden die Testrichtung, das R-Verhaltnis und die Umgebung variiert. Es stellte sich heraus, daR die Al-Li-Legierung in den meisten Fallen der konventionellen Al-Legierung ebenbiirtig oder iiberlegen war.

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