Method to manufacture titanium aluminide matrix composites
December 17, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesTitanium alloys of the Ti3 Al type Titanium metal-matrix composites Titanium aluminum alloys containing niobium, vanadium and molybdenum Method to produce metal matrix composite articles from alpha-beta titanium alloys Method of producing titanium aluminide metal matrix composite articles Composites having an intermetallic containing matrix RF plasma method of forming multilayer reinforced composites Method for continuous fabrication of fiber reinforced titanium-based composites Silicon-carbide reinforced composites of titanium aluminide Tri-titanium aluminide base alloys of improved strength and ductility InventorsAssigneeApplicationNo. 628955 filed on 12/17/1990US Classes:148/527, With metal next to or bonded to metal148/407, Refractory metal base148/516, Producing or treating layered, bonded, welded, or mechanically engaged article or stock as a final product148/564, Superplastic (e.g., dynamic recrystallization, etc.)420/129, Processes428/608, Embodying fibers interengaged or between layers (e.g., paper, etc.)428/614, Laterally noncoextensive components (e.g., embedded, etc.)428/629, Oxide428/660Refractory (Group IVB, VB, or VIB) metal-base componentExaminersPrimary: Roy, UpendraAttorney, Agent or FirmInternational ClassC22C 014/00AbstractA 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 Ti3 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.Other References
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