Accession Number : ADD011643

Title :   Titanium Metal-Matrix Composites.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Smith,P R ; Froes,F H

Report Date : 12 Feb 1985

Pagination or Media Count : 3

Abstract : Titanium alloy composites having substantially reduced reaction zones are provided which comprise a high strength/high stiffness filament such as silicon carbide, silicon carbide-coated boron, boron carbide-coated boron and silicon-coated silicon carbide, embedded in a fine-grained titanium alloy containing at least 40 percent beta phase, less than 7 percent Al and having a beta-transus temperature below 175 F. (955 C). Also provided is a method for fabricating titanium composites which comprises mechanically working a desired titanium alloy to obtain sheetstock in a desired thickness and having a relatively fine grain size, laying up a preform and consolidating the preform under increased temperature and pressure, wherein consolidation is carried out at a temperature below the beta-transus temperature of the alloy, thereby reducing the amount of reaction zone between the filament and the alloy matrix. (Author).

Descriptors :   *PATENTS, *TITANIUM ALLOYS, *METAL MATRIX COMPOSITES, *FABRICATION, HIGH STRENGTH ALLOYS, STIFFNESS, METAL FIBERS, SILICON CARBIDES, BORON CARBIDES, BORON, COATINGS, FINE GRAINED MATERIALS, THICKNESS

Subject Categories : Laminates and Composite Materials
      Metallurgy and Metallography
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE