Method of production of iron aluminide materials

Details Method of production of iron aluminide materials Method of production of iron aluminide materials

1993-09-13

1994-09-13

Dean, Richard O.

Metal treatment

Process of modifying or maintaining internal physical...

With casting or solidifying from melt

148546, 148547, 148326, 148328, C22C 3806

Patent

active

053465628

ABSTRACT:
The method makes possible the production of iron aluminide raw materials which consist of a Fe.sub.3 Al-base alloy containing 18-35% Al, 3-15% Cr, 0.2-0.5% B and/or C, and altogether 0-8% of the following alloying additives: Mo, Nb, Zr, Y and/or V, as well as iron as dominant remainder. In accordance with the invention additives are added to the melt of a known alloy, from which dispersed crystallites, dispersoids, are formed which thanks to good wettability become upon solidification, embedded in the monocrystalline phase. From the solid alloy, through hot rolling at a temperature between 650.degree. and 1000.degree. C., a fine grain structure may be generated.

REFERENCES:
patent: 1990650 (1935-02-01), Jaeger
patent: 2726952 (1955-12-01), Morgan
patent: 2768915 (1956-10-01), Nachman et al.
patent: 3026197 (1962-03-01), Schramm
patent: 5084109 (1992-01-01), Sikka

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