Property recovering method

Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal

Reexamination Certificate

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Details

C148S675000

Reexamination Certificate

active

07632362

ABSTRACT:
A method is disclosed for recovering the properties of single crystal and directionally solidified Nickel based superalloys and articles made thereof, after use in a high temperature environment. The method comprises the steps of a stress relief treatment, a γ′ rejuvenation heat treatment at a temperature below the γ′-solvus temperature (Tsolvus, γ′) of the superalloy, a precipitation heat treatment and an aging heat treatment.

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patent: 0 937 784 (1999-08-01), None
D.L. Sponseller, Superalloys, “Differential Thermal Analysis of Nickel-Base Superalloys”, 1996, p. 259.

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