Accession Number : ADD013694

Title :   Elevated Temperature Aluminum-Titanium Alloy.

Descriptive Note : Patent Application, Filed 29 Jan 88,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Frazier, William E ; Koczak, Michael J

Report Date : 29 Jan 1988

Pagination or Media Count : 14

Abstract : This abstract discloses an aluminum-titanium alloy and a process of making it. The alloy consist essentially of aluminum, 4-6 wt. % titanium, 1-2 wt. % carbon, and 0.1-0.2 WT. % oxygen. The alloy is an aluminum matrix supersaturated with titanium, and having throughout a fine, homogeneous dispersion of Al3Ti particles. It is fine grained and has grain boundary dispersoids of carbides and oxides, predominantly of aluminum. An aluminum-titanium melt is rapidly solidified and then mechanically alloyed in the presence of a carbon-bearing agent. The resulting powder is degassed and hot consolidated to form articles which exhibit high strength, ductility, and creep resistance at temperatures greater than 200 C.

Descriptors :   *PATENT APPLICATIONS, *POWDER METALLURGY, *TITANIUM ALLOYS, *ALUMINUM ALLOYS, ALUMINUM, CARBIDES, CREEP STRENGTH, DISPERSING, DISPERSIONS, DUCTILITY, GRAIN BOUNDARIES, HIGH STRENGTH, HOMOGENEITY, MATRIX MATERIALS, OXIDES, TEMPERATURE, TITANIUM, SOLIDIFICATION, ALUMINUM INTERMETALLICS, HIGH RATE

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE