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Effects of aging treatments on the Microstructure of the Ni-base superalloy IN-738

✍ Scribed by Dr. Phil. W. Hoffelner; Dr. Phil. L. E. Kny; Prof. Dr. Dipl.-Ing. R. Stickler; W. J. McCall

Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
781 KB
Volume
10
Category
Article
ISSN
0933-5137

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✦ Synopsis

Abstract

The effects of aging treatments on the microstructure of the Ni‐base superalloys IN‐738 HC and IN‐738 LC were investigated. Changes in (i) size, morphology, and distribution of the γ′‐phase, (ii) the amount of M~23~C~6~‐carbide, and (iii) the occurrence of additional phases and phase instabilities were quantitatively determined. The results indicate the possibility to deduce an unknown thermal history from the observed microstructure.

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