Components formed by controlling grain size in forged precipitation-strengthened alloys
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United States of America Patent
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Apr 26, 2016
Grant Date -
Oct 8, 2015
app pub date -
Feb 4, 2014
filing date -
May 5, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
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.
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International Classification(s)
- B21K:MAKING FORGED OR PRESSED PRODUCTS, e.g. HORSE-SHOE....
- B21J:FORGING; HAMMERING; PRESSING; RIVETING; FORGE FURN....
- B22F:WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES F....
- C22F:CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS MET....
- F01D:NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g....
- C22C:ALLOYS
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