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Effects of Low Gravity on Superalloy SolidificationReport describes experiments on directional solidification on MAR-M246(Hf) superalloy in low gravity. Determines effects of reduction in gravity on growth of dendrites and on resultant interdendritic segregation of various constituents, particularly of additive hafnium. Interdendritic spacings and carbide contents increase.
Document ID
19870000401
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Johnston, M. H.
(NASA Marshall Space Flight Center, Huntsville, Ala.)
Parr, R. A.
(NASA Marshall Space Flight Center, Huntsville, Ala.)
Curreri, P. A.
(NASA Marshall Space Flight Center, Huntsville, Ala.)
Alter, Wendy
(NASA Marshall Space Flight Center, Huntsville, Ala.)
Date Acquired
August 13, 2013
Publication Date
September 1, 1987
Publication Information
Publication: NASA Tech Briefs
Volume: 11
Issue: 8
ISSN: 0145-319X
Subject Category
Materials
Report/Patent Number
MFS-28027
Accession Number
87B10401
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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