Metal treatment – Compositions – Heat treating
Patent
1990-12-17
1992-04-14
Roy, Upendra
Metal treatment
Compositions
Heat treating
148133, 148407, 148 127B, 420129, 428629, 428660, C22C 1400
Patent
active
051044609
ABSTRACT:
A method for fabricating a composite structure consisting of a filamentary material selected from the group consisting of silicon carbide, silicon carbide-coated boron, boron carbide-coated boron, titanium boride-coated silicon carbide and silicon-coated silicon carbide, embedded in an alpha-2 titanium aluminide metal matrix, which comprises the steps of modifying the desired filamentary material with at least one beta stabilizer, providing a beta-stabilized Ti.sub.3 Al foil, fabricating a preform consisting of alternating layers of foil and a plurality of at least one of the beta stabilizer-coated filamentary materials, and applying heat and pressure to consolidate the preform.
The composite structure fabricated using the method of this invention is characterized by its lack of a denuded zone and absence of fabrication cracking.
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Eylon Daniel
Revelos William C.
Smith, Jr. Paul R.
Bricker Charles E.
Roy Upendra
Singer Donald J.
The United States of America as represented by the Secretary of
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