Oxidation resistant low expansion superalloys

Alloys or metallic compositions – Containing over 50 per cent metal but no base metal – Iron containing

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420447, 420448, 420586, C22C 3000

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054035473

ABSTRACT:
An oxidation resistant alloy containing iron, cobalt, nickel and at least 4 to 5% by weight aluminum having at least a duplex crystalline structure. One crystalline component of this structure is a gamma (fcc) phase having a gamma prime phase dispersed therein. The second crystalline component is enriched in aluminum compared to the first crystalline component and exhibits characteristics under X-ray diffraction and electron diffraction analysis of a BCC B2 structured phase.

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