New iron-aluminum-copper alloys which contain boron and have bee

Details New iron-aluminum-copper alloys which contain boron and have bee New iron-aluminum-copper alloys which contain boron and have bee

1981-04-27

1983-09-06

Sheehan, John P.

Specialized metallurgical processes, compositions for use therei

Compositions

Loose particulate mixture containing metal particles

75 05BA, 75123B, 75124, 75125, 148442, 420582, B22F 100

Patent

active

044027451

ABSTRACT:
New iron rich metal alloys containing aluminum and copper along with specific amounts of boron are disclosed. The alloys are subjected to rapid solidification processing (RSP) technique which produces cooling rates between .about.10.sup.5 to 10.sup.7 .degree.C./sec. The as-quenched ribbon, powder etc. consists primarily of a metastable crystalline solid solution phase. The metastable crystalline phases are subjected to suitable heat treatments so as to produce a transformation to a stable multiphase microstructure which includes borides; this heat treated alloy exhibits superior mechanical properties with good corrosion and/or oxidation resistance for numerous engineering applications.

REFERENCES:
patent: Re29989 (1979-05-01), Polk et al.
patent: Re30106 (1979-10-01), Polk et al.
patent: 1493191 (1924-05-01), De Golyer
patent: 4052201 (1977-10-01), Polk et al.
patent: 4197146 (1980-04-01), Frischmann
patent: 4236946 (1980-12-01), Aboaf et al.
patent: 4264358 (1981-04-01), Johnson et al.
patent: 4297135 (1981-10-01), Giessen et al.
Metallic Glasses, American Society for Metals 1978 p. 31.
Proc. Int. Conf. on Rapid Solidification Processing; Reston, Virginia 1980, Pub. Claitors Publishing Div., Baton Rouge, La.
Rapidly Quenched Metals, 3rd Int. Conf. vols. 1 and 2, The Metals Society, London 1978.

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