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Continuous fiber-reinforced titanium aluminide compositesAn account is given of the fabrication techniques, microstructural characteristics, and mechanical behavior of a lightweight, high service temperature SiC-reinforced alpha-2 Ti-14Al-21Nb intermetallic-matrix composite. Fabrication techniques under investigation to improve the low-temperature ductility and environmental resistance of this material system, while reducing manufacturing costs to competitive levels, encompass powder-cloth processing, foil-fiber-foil processing, and thermal-spray processing. Attention is given to composite microstructure problems associated with fiber distribution and fiber-matrix interfaces, as well as with mismatches of thermal-expansion coefficient; major improvements are noted to be required in tensile properties, thermal cycling effects, mechanical damage, creep, and environmental effects.
Document ID
19910054930
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mackay, R. A.
(NASA Lewis Research Center Cleveland, OH, United States)
Brindley, P. K.
(NASA Lewis Research Center Cleveland, OH, United States)
Froes, F. H.
(Idaho, University Moscow, United States)
Date Acquired
August 15, 2013
Publication Date
May 1, 1991
Publication Information
Publication: JOM
Volume: 43
ISSN: 1047-4838
Subject Category
Composite Materials
Accession Number
91A39553
Distribution Limits
Public
Copyright
Other

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