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Title: Methods for preparing superalloy articles and related articles

Abstract

A method for preparing an article including a nickel-based superalloy is presented. The method includes heat-treating a workpiece including a nickel-based superalloy at a temperature above a gamma-prime solvus temperature of the nickel-based superalloy and cooling the heat-treated workpiece with a cooling rate less than 50 degrees Fahrenheit/minute from the temperature above the gamma-prime solvus temperature of the nickel-based superalloy so as to obtain a cooled workpiece. The cooled workpiece includes a gamma-prime precipitate phase having an average particle size less than 250 nanometers at a concentration of at least 10 percent by volume, and is substantially free of a gamma-double-prime phase. An article having a minimum dimension greater than 6 inches is also presented. The article includes a material that has a gamma-prime precipitate phase having an average particle size less than 250 nanometers, and is substantially free of a gamma-double-prime phase.

Inventors:
; ;
Issue Date:
Research Org.:
General Electric Co., Schenectady, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1498700
Patent Number(s):
10184166
Application Number:
15/198,514
Assignee:
General Electric Company (Schenectady, NY)
Patent Classifications (CPCs):
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
C - CHEMISTRY C22 - METALLURGY C22F - CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
DOE Contract Number:  
FE0026299
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Jun 30
Country of Publication:
United States
Language:
English

Citation Formats

Detor, Andrew Joseph, DiDomizio, Richard, and Zhou, Ning. Methods for preparing superalloy articles and related articles. United States: N. p., 2019. Web.
Detor, Andrew Joseph, DiDomizio, Richard, & Zhou, Ning. Methods for preparing superalloy articles and related articles. United States.
Detor, Andrew Joseph, DiDomizio, Richard, and Zhou, Ning. Tue . "Methods for preparing superalloy articles and related articles". United States. https://www.osti.gov/servlets/purl/1498700.
@article{osti_1498700,
title = {Methods for preparing superalloy articles and related articles},
author = {Detor, Andrew Joseph and DiDomizio, Richard and Zhou, Ning},
abstractNote = {A method for preparing an article including a nickel-based superalloy is presented. The method includes heat-treating a workpiece including a nickel-based superalloy at a temperature above a gamma-prime solvus temperature of the nickel-based superalloy and cooling the heat-treated workpiece with a cooling rate less than 50 degrees Fahrenheit/minute from the temperature above the gamma-prime solvus temperature of the nickel-based superalloy so as to obtain a cooled workpiece. The cooled workpiece includes a gamma-prime precipitate phase having an average particle size less than 250 nanometers at a concentration of at least 10 percent by volume, and is substantially free of a gamma-double-prime phase. An article having a minimum dimension greater than 6 inches is also presented. The article includes a material that has a gamma-prime precipitate phase having an average particle size less than 250 nanometers, and is substantially free of a gamma-double-prime phase.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {1}
}

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