Iron-based casting alloy
AssigneeClimax Research Services, Inc.
InventorsRichard B. Gundlach, Sumita Majumdar
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Abstract
An iron-based casting alloy and a process for making the alloy are provided by combining an iron-carbon-chromium system with primary carbides of vanadium, niobium, titanium, or combinations thereof without any eutectic carbides of vanadium, niobium and titanium. Eutectic chromium carbides (M7C3) are also formed without any primary chromium carbides. Proeutectic austenite can also be formed in the alloy.
Claims3
An iron-based casting alloy, comprising an iron matrix having eutectic chromium carbides of a first alloy system and also having primary carbides of a second alloy system selected from the group consisting of vanadium carbides, niobium carbides, titanium carbides and combinations thereof without eutectic carbides thereof, and the primary carbides having been precipitated at a primary carbide liquidus of the second alloy system which has a eutectic that is maintained below an austenite liquidus of the first alloy system to prevent formation of eutectic carbides of the second alloy system.
Dependencies are inferred from the claim text.