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DOE OSTI · 1650850

Methods for preparing superalloy articles and related articles

Detor, Andrew Joseph·DiDomizio, Richard·Hanlon, Timothy·Shen, Chen·Zhou, Ning
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Abstract

A method for preparing an improved article including a nickel-based superalloy is presented. The method includes heat-treating a workpiece including a nickel-based superalloy at a temperature above the 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 coprecipitate of a gamma-prime phase and a gamma-double-prime phase, wherein the gamma-prime phase of the coprecipitate has an average particle size less than 250 nanometers. An article having a minimum dimension greater than 6 inches is also presented. The article includes a material having a coprecipitate of a gamma-prime phase and a gamma-double-prime phase, wherein the gamma-prime phase of the coprecipitate has an average particle size less than 250 nanometers.

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36 MATERIALS SCIENCE

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Detor, Andrew Joseph, DiDomizio, Richard, Hanlon, Timothy, Shen, Chen, Zhou, Ning. 2020-05-05. Methods for preparing superalloy articles and related articles. https://www.osti.gov/biblio/1650850

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36 MATERIALS SCIENCE↗