Elevated temperature aluminum-titanium alloy by powder metallurg

Alloys or metallic compositions – Aluminum base – Titanium – zirconium – hafnium – vanadium – niobium – or tantalum...

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

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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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