Determination of the sign of the {gamma}/{gamma}{prime}-misfit in nickel-base superalloys by use of spectral impure Cu(Cr) radiation

Journal Article · Sun Jun 01 04:00:00 EDT 1997 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(97)00028-6· OSTI ID:509160

Brueckner, U; Nolze, G ^[1]; Epishin, A ^[2]

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1. Bundesanstalt fuer Materialforschung und -Pruefung, Berlin (Germany)
2. Russian Inst. of Aviation Materials, Moscow (Russian Federation)

A simple method to determine the {gamma}/{gamma}{prime}-misfit sign in nickel-base superalloys by use of spectral impure Cu(Cr) radiation was suggested. It was found that because of the segregation the local misfit in a superalloy may change the sign depending on position in the superalloy`s dendritic structure. The mixed X-ray radiation may be also useful for some other applications, for example, when the number of available reflections is not sufficient and for simultaneous X-ray analysis at different penetration depths. It would be interesting to apply multielement tubes optimized for special tasks.

• OSTI ID: 509160
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 11 Vol. 36; ISSN 1359-6462; ISSN SCMAF7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DATA ANALYSIS
DENDRITES
LATTICE PARAMETERS
MICROSTRUCTURE
NICKEL BASE ALLOYS
PRECIPITATION
SEGREGATION
X-RAY DIFFRACTION