Method for providing ferritic-iron-based alloys

Details Method for providing ferritic-iron-based alloys Method for providing ferritic-iron-based alloys

1977-04-15

1978-05-02

Stern, Edward

Metal treatment

Compositions

Heat treating

148142, C21D 602

Patent

active

040872874

ABSTRACT:
A strengthened creep resistant ferritic iron alloy is provided by alloying the iron with two or more alloying metals of the type that form an intermediate Laves phase in the alloy having the composition Fe.sub.2 X, where X is the alloying metal. One of the alloying metals comprises one to five weight percent of tantalum and/or columbium while the other metal comprises one to eight weight percent of molybdenum and/or tungsten. The total of the Laves phase forming alloying metals is no more than ten weight percent in excess of that necessary to react with interstitial elements that may be added to the alloy.

REFERENCES:
patent: 2744821 (1956-05-01), Osman
patent: 2822265 (1958-02-01), Eberle et al.
patent: 2826496 (1958-03-01), Kegerise
patent: 3794532 (1974-02-01), Jones et al.
patent: 3871928 (1975-03-01), Smith, Jr. et al.
Iron and Steel (1970), pp. 1747-1756, article by M. Takeyama et al.

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