Hybrid titanium alloy matrix composites
Patent 4816347 Issued on March 28, 1989. Estimated Expiration Date: 
May 29, 2007. 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.
May 29, 2007. 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 References 3556837 3676293 3849080 Method of fabricating a filament-reinforced composite article Fibre-reinforced metal panels and production thereof Titanium metal-matrix composites Inorganic fiber-reinforced metallic composite material Patent #: 4622270 InventorsAssigneeApplicationNo. 07/055415 filed on 05/29/1987US Classes:428/615, Composite; i.e., plural, adjacent, spatially distinct metal components (e.g., layers, joint, etc.)428/607, Composite428/608, Embodying fibers interengaged or between layers (e.g., paper, etc.)428/614Laterally noncoextensive components (e.g., embedded, etc.)ExaminersPrimary: Roy, UpendraAttorney, Agent or FirmInternational ClassesB32B 15/01 (20060101)C22C 47/00 (20060101) C22C 47/20 (20060101) C22C 49/11 (20060101) C22C 49/12 (20060101) C22C 49/00 (20060101) AbstractA combination of unique properties of (i) high strength and stiffness at temperatures up to about of 1500° F., (ii) good room temperature mechanical properties including good ductility and (iii) improved resistance to matrix cracking is achieved in a titanium structure by forming a hybrid titanium alloy matrix composite in which the matrix consists of layers of at least two alloys, i.e. a high temperature-resistant titanium aluminide alloy and a ductile, lower modulus titanium alloy, that are bonded metallurgically to each other in various embodiments. A reinforcing material in the form of filaments, fibers or wiskers, e.g. silicon carbide, can be embedded within either or both types of the titanium layers.Other References
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