Alloys or metallic compositions – Aluminum base – Titanium – zirconium – hafnium – vanadium – niobium – or tantalum...
Patent
1989-01-24
1991-08-20
Andrews, Melvyn J.
Alloys or metallic compositions
Aluminum base
Titanium, zirconium, hafnium, vanadium, niobium, or tantalum...
C22C 2100
Patent
active
050412639
ABSTRACT:
Provided is an improved aluminum-titanium master alloy containing carbon in a small but effective content and not more than about 0.1%. After melting, the master alloy is superheated to about 1200.degree.-1250.degree. C. to put the carbon into solution, then the alloy is cast in a workable form. The master alloy in final form is substantially free of carbides greater than about 5 microns in diameter. The alloy of this invention is used to refine aluminum products that may be rolled into thin sheet, foil, or fine wire and the like.
REFERENCES:
patent: 4298408 (1981-11-01), Langdon et al.
patent: 4748001 (1988-05-01), Banerji et al.
patent: 4812290 (1989-03-01), Sigworth
Banerji and Reif, "Grain Refinement of Aluminum as Related to the Morphology of Al.sub.3 Ti Primary Phase in Al-Ti-B Master Alloys," Metall. (39 Jahrgang, Heft 6, Juni 1985), pp. 513-519.
Metals Handbook, 8th Ed., vol. 8, "Metalography Structures and Phase Diagrams," pp. 264, 344 (1973).
Davies, et al., "The Nucleation of Aluminum Grains in Alloys of Aluminum with Titanium and Boron," Metallurigical Transactions, vol. 1, pp. 275-280 (Jan. 1970).
Andrews Melvyn J.
KB Alloys, Inc.
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