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Effects Of B On Intergranular Hot Cracking In Ni AlloysReport describes experiments on role of boron on solidification of 718-type nickel/chromium/iron superalloys containing niobium and relative intergranular segregations of boron, sulfur, and phosphorus in alloys. Ten alloys studied by use of light and scanning electron microscopy (SEM), energy-dispersive x-ray analysis, transmission electron microscopy (TEM) with energy-dispersive analysis of thin-film specimens, mechanical tests for susceptibility to microfissuring, differential thermal analysis (DTA), scanning Auger microscopy, and Gleeble thermal analysis.
Document ID
19920000751
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Thompson, Raymond G.
(Alabama Univ.)
Date Acquired
August 15, 2013
Publication Date
December 1, 1992
Publication Information
Publication: NASA Tech Briefs
Volume: 16
Issue: 12
ISSN: 0145-319X
Subject Category
Materials
Report/Patent Number
MFS-27252
Accession Number
92B10751
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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