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1000 to 1200 K time-dependent compressive deformation of single-crystalline and polycrystalline B2 Ni-40AlThe 1000-K and 1200-K time-dependent deformation of 100-line-oriented and non-100-line-oriented single crystals of Ni-40Al (made by a modified Bridgman technique) was examined over a large range of strain rates (from 0.1 to 10 to the -7th per sec). The results were compared with those for polycrystalline Ni-40Al made by hot pressing XD synthesized powder. The results from measurements of slow-plastic-strain-rate properties of the two materials show that single crystals offer no strength advantage over polycrystalline material. Both forms were found to deform via a dislocation climb mechanism.
Document ID
19910059047
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Whittenberger, J. D.
(NASA Lewis Research Center Cleveland, OH, United States)
Noebe, R. D.
(NASA Lewis Research Center Cleveland, OH, United States)
Kumar, K. S.
(Martin Marietta Laboratories Baltimore, MD, United States)
Mannan, S. K.
(Inco Alloys International, Inc., Huntington WV, United States)
Cullers, C. L.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 15, 2013
Publication Date
July 1, 1991
Publication Information
Publication: Metallurgical Transactions A - Physical Metallurgy and Materials Science
Volume: 22A
ISSN: 0360-2133
Subject Category
Metallic Materials
Accession Number
91A43670
Distribution Limits
Public
Copyright
Other

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