SEM Investigations of Fatigue Crack Propagation in RR 58 Aluminum Alloy

[+] Author and Article Information
D. W. Cameron

Department of Mechanical Engineering, University of Toronto, Toronto, Ontario M5S 1A4

R. H. Jeal

Rolls-Royce, Ltd., Aeroengine Division, Derby, England DE2 8BJ

D. W. Hoeppner

Structural Integrity, Fatigue, and Fracture Laboratories, Department of Mechanical Engineering, University of Toronto, Toronto, Ontario M5S 1A4

J. Eng. Gas Turbines Power 107(1), 238-241 (Jan 01, 1985) (4 pages) doi:10.1115/1.3239689 History: Received January 18, 1984; Online October 15, 2009


Aluminum alloy RR 58 (AA 2618) has been viewed during exposure to cyclic loading, which is applied using a load frame inserted into a scanning electron microscope. Thus observation of surface interactions of the material microstructure with a propagating crack is feasible. Photomicrographs and (for the purposes of analysis and presentation) dynamic, real-time video-recordings used to document the processes will be displayed and the nature of the observations presented in relation to existing physical understanding of fatigue. Some additional ideas will be included based on the results presented herein.

Copyright © 1985 by ASME
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