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:

1989-05-30

Pagination or Media Count:

5.0

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