In situ determination of {gamma}{prime} phase volume fraction and of relations between lattice parameters and precipitate morphology in Ni-based single crystal superalloy
- European Synchrotron Radiation Facility, Grenoble (France)
- Univ. Joseph Fourier, Saint-Martin-d`Heres (France). Lab. de Spectrometrie Physique
- LTPCM, Saint-Martin-d`Heres (France)
Diffraction profiles of single crystal Ni-based superalloy samples with different microstructures were measured in situ up to the complete solutionizing of the {gamma}{prime} phase, using a high resolution triple crystal diffactometer and high energy synchrotron radiation (150 keV, {lambda} = 0.08 {angstrom}). A comparison between an undeformed sample and creep-deformed specimens with various resultant microstructures evidenced a relation between the lattice parameter distribution, the {gamma}{prime} precipitate microstructure and the sign of the connectivity. It was shown that a deformation induces a change in the relative volume cell of {gamma} and {gamma}{prime} phases. Moreover, the high resolution of the experimental set-up allows in many cases the {gamma}{prime} phase volume fraction to be measured with a good accuracy.
- OSTI ID:
- 665191
- Journal Information:
- Acta Materialia, Vol. 46, Issue 15; Other Information: PBD: 18 Sep 1998
- Country of Publication:
- United States
- Language:
- English
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