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Precision cast vs. wrought superalloysWhile cast polycrystalline superalloys recommend themselves in virtue of better 'buy-to-fly' ratios and higher strengthening gamma-prime volume fractions than those of wrought superalloys, the expansion of their use into such critical superalloy applications as gas turbine hot section components has been slowed by insufficient casting process opportunities for microstructural control. Attention is presently drawn, however, to casting process developments facilitating the production of defect-tolerant superalloy castings having improved fracture reliability. Integrally bladed turbine wheel and thin-walled turbine exhaust case near-net-shape castings have been produced by these means.
Document ID
19870041013
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Tien, J. K.
(Columbia Univ. New York, NY, United States)
Borofka, J. C.
(Columbia Univ. New York, NY, United States)
Casey, M. E.
(Columbia University New York, United States)
Date Acquired
August 13, 2013
Publication Date
December 1, 1986
Publication Information
Publication: Journal of Metals
Volume: 38
ISSN: 0148-6608
Subject Category
Metallic Materials
Accession Number
87A28287
Distribution Limits
Public
Copyright
Other

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