Claims
- 1. In a method for heat treating nickel base superalloy articles including the steps of heating the article, to a temperature near or above the gamma prime solvus, quenching the article, and reheating the quenched article to an intermediate temperature, the improvement which comprises:
- prior to heat treatment, electroplating the exposed surfaces with a thin adherent layer of a metal selected from the group consisting of nickel, alloys containing at leat 60% nickel along with additions of chromium and/or cobalt, and iron; whereby intergranular oxidation of the superalloy surfaces is prevented so that cracks do not initiate at sites where intergranular oxidation has occurred.
DESCRIPTION
This is a continuation of application Ser. No. 215,201 filed on Dec. 10, 1980, now abandoned.
US Referenced Citations (13)
Continuations (1)
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Number |
Date |
Country |
Parent |
215201 |
Dec 1980 |
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