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Interdiffusional effects between tungsten fibers and an iron-nickel-base alloyTungsten fibers in the INCOLOY 903 alloy were annealed for over 100 hours at 1038 C and 1200 C. It was found that interdiffusion results in the formation of a reaction zone. SEM-EDS probe analysis showed that the chemistries across this zone were constant, suggesting the zone was a compound phase. The composition of the compound was estimated to be that of a mu-type phase. The local chemistry (in atomic percent) at the reaction zone/alloy matrix interface was found to be approximately 8 pct W, 1.2 pct Nb, 40 pct Fe, 14 pct Co, and 36 pct Ni. In addition, recrystallization was observed in both the remaining tungsten fiber and the nearby INCOLOY 903 matrix after annealing at 1200 C, but not at 1038 C. The results of this study suggest that reaction zone growth kinetics can be minimized by the reduction of Co and Fe and the increase of W in the matrix alloy.
Document ID
19860029980
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Caulfield, T.
(Columbia Univ. New York, NY, United States)
Bellows, R. S.
(Columbia Univ. New York, NY, United States)
Tien, J. K.
(Columbia University New York, United States)
Date Acquired
August 12, 2013
Publication Date
November 1, 1985
Publication Information
Publication: Metallurgical Transactions A - Physical Metallurgy and Materials Science
Volume: 16A
ISSN: 0360-2133
Subject Category
Composite Materials
Accession Number
86A14718
Funding Number(s)
CONTRACT_GRANT: NAG3-410
Distribution Limits
Public
Copyright
Other

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