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Effect Of Solidification Speed On Fatigue PropertiesFast solidification increases fatigue life, but failure distribution becomes less predictable. Report describes effects of rate of solidification on nickel-based super-alloy MAR-M246(Hf) used in turbine blades. Based on experiments in which specimens directionally solidified at 5 cm/h and 30 cm/h, then tested for high cycle fatigue. Specimens also inspected by energy-dispersive x-ray (EDX) analysis and optical and electron microscopy.
Document ID
19890000300
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Mccay, M. H. (NASA Marshall Space Flight Center, Huntsville, AL.)
Schmidt, D. D. (NASA Marshall Space Flight Center, Huntsville, AL.)
Hamilton, W. D. (NASA Marshall Space Flight Center, Huntsville, AL.)
Alter, W. S. (NASA Marshall Space Flight Center, Huntsville, AL.)
Parr, R. A. (NASA Marshall Space Flight Center, Huntsville, AL.)
Date Acquired
August 14, 2013
Publication Date
June 1, 1989
Publication Information
Publication: NASA Tech Briefs
Volume: 13
Issue: 6
ISSN: 0145-319X
Subject Category
Materials
Report/Patent Number
MFS-27215
Accession Number
89B10300
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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