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Effects of Cobalt Concentration on the Relative Resistance to Octahedral and Cube Slip in Nickel-Base SuperalloysCompression yielding tests were performed at 760 C on crystals of the Ni base superalloys Rene 150 and a modified MAR-M247, both having two different Co concentrations. For both alloy bases, increasing Co concentration was shown to decrease the critical resolved shear stress for octahedral slip, but to have little effect on that for cube slip. The results suggest that decreasing complex stacking fault energy in the gamma-prime with increasing Co could account for the observed effects.
Document ID
19890029744
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Bobeck, Gene E.
(Idaho, University Moscow, United States)
Miner, R. V.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 14, 2013
Publication Date
November 1, 1988
Publication Information
Publication: Metallurgical Transactions A - Physical Metallurgy and Materials Science
Volume: 19A
ISSN: 0360-2133
Subject Category
Metallic Materials
Accession Number
89A17115
Distribution Limits
Public
Copyright
Other

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