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Rapid solidification of Nb-base alloysNew Nb-base alloys are of interest for aerospace structural applications at high temperatures, viz, 800 to 1650 C. Fundamental information regarding the effects of rapid solidification in achieving greatly refined microstructures, extended solid solubility, suppression of embrittling equilibrium phases, and formation of new phases is desired in a number of Nb-X alloys. The microstructures and selected properties of Nb-Si and other Nb-base alloys are presented for materials both rapidly quenched from the equilibrium liquidus and rapidly solidified following deep supercooling. Electromagnetic levitation was used to achieve melting and supercooling in a containerless inert gas environment. A variety of solidification conditions were employed including splatting or drop casting of supercooled samples. The morphology and composition of phases formed are discussed in terms of both solidification history and bulk composition.
Document ID
19890058562
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Gokhale, A. B.
(Florida Univ. Gainesville, FL, United States)
Javed, K. R.
(Florida Univ. Gainesville, FL, United States)
Abbaschian, G. J.
(Florida, University Gainesville, United States)
Lewis, R. E.
(Lockheed Missiles and Space Co., Inc. Palo Alto, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1988
Subject Category
Metallic Materials
Meeting Information
Meeting: International SAMPE Metals and Metals Processing Conference
Location: Dayton, OH
Country: United States
Start Date: August 2, 1988
End Date: August 4, 1988
Sponsors: SAMPE
Accession Number
89A45933
Distribution Limits
Public
Copyright
Other

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