Elevated temperature aluminum-titanium alloy by powder metallurg

Details Elevated temperature aluminum-titanium alloy by powder metallurg Elevated temperature aluminum-titanium alloy by powder metallurg

1988-01-29

1989-05-30

Dean, R.

Alloys or metallic compositions

Aluminum base

Titanium, zirconium, hafnium, vanadium, niobium, or tantalum...

75233, 75249, 148 115P, 148437, 419 66, 419 67, 419 68, 419 69, C22C 2100

Patent

active

048349429

ABSTRACT:
An aluminum-titanium alloy and a process of making it, the alloy consisting ssentially 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 Al.sub.3 Ti 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.degree. C.

REFERENCES:
patent: 3462248 (1969-08-01), Roberts et al.

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