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Microstructure and mechanical properties of multiphase NiAl-based alloysThe effect of the gamma-prime phase on the deformation behavior and fracture resistance of melt-spun ribbons and consolidated bulk specimens of a series of Nial-based alloys with Co and Hf additions has been examined. The morphology, location, and volume fraction of the gamma-prime phase are significant factors in enhancing the fracture resistance of the normally brittle NiAl-based alloys. In particular, the results indicate that a continuous-grain-boundary film of gamma-prime can impart limited room-temperature ductility regardless of whether B2 or L10 NiAl is present. Guidelines for microstructure control in multiphase NiAl-based alloys are also presented.
Document ID
19900048016
Document Type
Reprint (Version printed in journal)
Authors
Pank, D. R. (Pennsylvania State Univ. University Park, PA, United States)
Koss, D. A. (Pennsylvania State University University Park, United States)
Nathal, M. V. (NASA Lewis Research Center Cleveland, United States)
Date Acquired
August 14, 2013
Publication Date
May 1, 1990
Publication Information
Publication: Journal of Materials Research
Volume: 5
ISSN: 0884-2914
Subject Category
METALLIC MATERIALS
Funding Number(s)
CONTRACT_GRANT: NAG3-827
Distribution Limits
Public
Copyright
Other