Nanophase composite duct assembly

Details Nanophase composite duct assembly Nanophase composite duct assembly

2005-02-01

2005-02-01

Omgba, Essama (Department: 3726)

Metal working

Method of mechanical manufacture

Assembling or joining

C029S889500, C029S890010, C148S689000, C285S417000

Reexamination Certificate

active

06848163

ABSTRACT:
A nanophase composite duct assembly and method of fabricating the same are provided that comprise an ultra-high strength nanophase aluminum alloy duct joined with a ceramic particulate reinforced metal matrix fitting, preferably using solid-state friction welding. The nanophase aluminum alloy duct is fabricated by extruding a billet formed by a process of cryogenic milling the alloy, followed by out-gassing, then hot isostatic pressing. The fitting is fabricated by combining a ceramic particulate with a metal matrix, preferably by powder processing or liquid metal infiltration. Further, the solid-state friction welding may comprise inertial welding, friction stir welding, or a combination thereof. As a result, a lightweight duct assembly is provided for high-pressure liquids such as propellants in rocket engines.

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