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A study of fatigue damage mechanisms in Waspaloy from 25 to 800 CThe objective of the study was to examine the effect of various microstructures on the fatigue and damage accumulation behavior of Waspaloy, a nickel-base alloy commonly used in aircraft engines. Shearing was the dominant deformation mode in specimens with coarse grains and small (50-80 A) gamma prime particles, whereas Orowan looping was dominant in fine-grained specimens with large (about 900 A) gamma prime particles. At temperatures up to 500 C, cracks initiated transgranularly, while at 800 C the failure process was intergranular for both coarse-grained and fine-grained specimens. At temperatures above 500 C, a significant decrease in the fatigue life was observed for both coarse-grained and fine-grained material.
Document ID
19850029947
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Lerch, B. A.
(Max-Planck-Institut fuer Metallforschung, Stuttgart, West Germany; Cincinnati, University Cincinnati, OH, United States)
Jayaraman, N.
(Cincinnati, University Cincinnati, OH, United States)
Antolovich, S. D.
(Georgia Institute of Technology Atlanta, GA, United States)
Date Acquired
August 12, 2013
Publication Date
September 15, 1984
Publication Information
Publication: Materials Science and Engineering
Volume: 66
ISSN: 0025-5416
Subject Category
Metallic Materials
Accession Number
85A12098
Funding Number(s)
CONTRACT_GRANT: NSG-3263
Distribution Limits
Public
Copyright
Other

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