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AssigneeGeneral Electric Company
InventorsGeorge Albert Goller, Raymond Joseph Stonitsch, Richard DiDomizio
Estimating the term…
Components and methods of processing such components from precipitation-strengthened alloys so that the components exhibit desirable grain sizes following a supersolvus heat treatment. The method includes consolidating a powder of the alloy to form a billet having an average grain size. The billet is then forged at a temperature below the solvus temperature to form a forging having an average grain size of not coarser than the grain size of the billet. The billet is then forged at a total strain of at least 5%, after which at least a portion of the forging is heat treated at a temperature below the solvus temperature to pin grains within the portion. The entire forging can then be heat treated at a temperature above the solvus temperature of the alloy without coarsening the grains in the portion.
A method of forming an article from a precipitation-strengthened iron-based or nickel-based superalloy having a solvus temperature, the method comprising the steps of:
A method of forming a disk for a land-based gas turbine engine, the method comprising the steps of:
Dependencies are inferred from the claim text.