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Solidification-Rate Effects In MAR-M-246+Hf AlloyUnder slower solidification, primary-dendrite-arm spacing increases. Report discusses experiments on influence of solidification rates on crystallographic orientation and mechanical properties of superalloy MAR-M-246+Hf. Specimens grown in directional-solidification furnace, visually examined for microstructure, and stretched to failure in tensile-testing machine. Back-reflection Laue x-ray photographs taken to determine growth orientations.
Document ID
19880000110
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Hamilton, David (NASA Marshall Space Flight Center, Huntsville, Ala.)
Date Acquired
August 13, 2013
Publication Date
February 1, 1988
Publication Information
Publication: NASA Tech Briefs
Volume: 12
Issue: 2
ISSN: 0145-319X
Subject Category
Materials
Report/Patent Number
MFS-27057
Accession Number
88B10110
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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