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Producing Foils From Direct Cast Titanium Alloy StripThis research was undertaken to demonstrate the feasibility of producing high-quality, thin-gage, titanium foil from direct cast titanium strip. Melt Overflow Rapid Solidification Technology (MORST) was used to cast several different titanium alloys into 500 microns thick strip, 10 cm wide and up to 3 m long. The strip was then either ground, hot pack rolled or cold rolled, as appropriate, into foil. Gamma titanium aluminide (TiAl) was cast and ground to approximately 100 microns thick foil and alpha-2 titanium aluminide (Ti3AI) was cast and hot pack rolled to approximately 70 microns thick foil. CP Ti, Ti6Al2Sn4Zr2Mo, and Ti22AI23Nb (Orthorhombic), were successfully cast and cold-rolled into good quality foil (less than 125 microns thick). The foils were generally fully dense with smooth surfaces, had fine, uniform microstructures, and demonstrated mechanical properties equivalent to conventionally produced titanium. By eliminating many manufacturing steps, this technology has the potential to produce thin gage, titanium foil with good engineering properties at significantly reduced cost relative to conventional ingot metallurgy processing.
Document ID
19960047647
Acquisition Source
Langley Research Center
Document Type
Contractor Report (CR)
Authors
Stuart, T. A.
(Ribbon Technology Corp. Gahanna, OH United States)
Gaspar, T. A.
(Ribbon Technology Corp. Gahanna, OH United States)
Sukonnik, I. M.
(Texas Instruments, Inc. Attleboro, MA United States)
Semiatan, S. L.
(Wright Lab. Wright-Patterson AFB, OH United States)
Batawi, E.
(Sulzer Innotec A.G. Winterthur, Switzerland)
Peters, J. A.
(Sulzer Innotec A.G. Winterthur, Switzerland)
Fraser, H. L.
(Ohio State Univ. Columbus, OH United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1996
Subject Category
Metallic Materials
Report/Patent Number
NAS 1.26:4742
NASA-CR-4742
Accession Number
96N33260
Funding Number(s)
CONTRACT_GRANT: NAS1-19942
PROJECT: RTOP 505-63-50-02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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