Method for reducing heat treatment residual stresses in super-solvus solutioned nickel-base superalloy articles

Method for reducing heat treatment residual stresses in super-solvus solutioned nickel-base superalloy articles

In accordance with an embodiment of the present invention, a method for reducing residual stress in a nickel-base superalloy article comprising about 40-70% of gamma prime phase and having a gamma prime solvus temperature is disclosed. The method comprises the steps of super-solvus heat treating the...

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Hauptverfasser: Groh, Jon Raymond, Srivatsa, Shesh Krishna
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creator Groh, Jon Raymond
Srivatsa, Shesh Krishna
description In accordance with an embodiment of the present invention, a method for reducing residual stress in a nickel-base superalloy article comprising about 40-70% of gamma prime phase and having a gamma prime solvus temperature is disclosed. The method comprises the steps of super-solvus heat treating the superalloy article about 5-40° F. (3-22° C.) above the gamma prime solvus temperature; and holding at the super-solvus heat treatment temperature for about 0.25-2 hours, wherein the heat-treated superalloy article has reduced residual stress.
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The method comprises the steps of super-solvus heat treating the superalloy article about 5-40° F. 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The method comprises the steps of super-solvus heat treating the superalloy article about 5-40° F. 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The method comprises the steps of super-solvus heat treating the superalloy article about 5-40° F. (3-22° C.) above the gamma prime solvus temperature; and holding at the super-solvus heat treatment temperature for about 0.25-2 hours, wherein the heat-treated superalloy article has reduced residual stress.</abstract><oa>free_for_read</oa></addata></record>
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title Method for reducing heat treatment residual stresses in super-solvus solutioned nickel-base superalloy articles
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