Dispersion strengthened alloy
AssigneeInco Alloys International, Inc.
InventorsRaymond C. Benn, Gaylord D. Smith, John J. Fischer
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Abstract
A dispersion-strengthened (DS) alloy, more particularly oxide-dispersion-strengthened (ODS) iron-based alloys which manifest resistant to oxidation at temperatures as high as 1300.degree. C. (approx. 2400.degree. F.) whereby the alloys are useful in the production of advanced aircraft gas turbine engine components and in demanding industrial applications.
Claims4
A flat rolled product such as sheet and strip characterized by good fabricability and enhanced resistance to oxidation at temperatures as high as 1300.degree. C., said product being formed from an alloy consisting of about 23 to 30% chromium, about 5 to 6.25% aluminum, a small but effective amount of at least one dispersoid to enhance strength and selected from the group of materials having a melting point in excess of 1510.degree. C. and consisting of oxides, nitrides, borides and refractory metals, up to 1% each of titanium, niobium, zirconium, hafnium, and vanadium, up to 6% each of molybdenum and tungsten, up to 0.5% silicon and niobium, up to 0.05% each of calcium, yttrium and rare earth metals, up to 0.2% boron, the balance being essentially iron, said product, by virtue of the respective percentages of chromium and aluminum, affording resistance to the onset of slagging attack and/or accelerated oxidation when subjected to operating environments at temperatures up to at least 1300.degree. C.
Dependencies are inferred from the claim text.