Accession Number : ADD014165

Title :   Elevated Temperature Aluminum-Titanium Alloy by Powder Metallurgy Process.

Descriptive Note : Patent, Filed 29 Jan 88, patented 30 May 89,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

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

Report Date : 30 May 1989

Pagination or Media Count : 5

Abstract : An aluminum-titanium alloy and a process of making it, the alloy consisting 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 Al3T1 particles. It is fine grained and has grain boundary dispersion 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. Pat-cl-420-552. (JES)

Descriptors :   *ALUMINUM, *POWDER METALLURGY, CARBIDES, CREEP STRENGTH, DISPERSING, DUCTILITY, GRAIN BOUNDARIES, HIGH STRENGTH, HOMOGENEITY, MATRIX MATERIALS, OXIDES, TEMPERATURE, TITANIUM

Subject Categories : Guns

Distribution Statement : APPROVED FOR PUBLIC RELEASE