1. Temperature dependence of ordering in the ? -phase of Ni-based superalloys
- Author
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M. Prem, N. Clément, G. Krexner, and F. Pettinari-Sturmel
- Subjects
Superalloy ,Crystallography ,Materials science ,Scattering ,Phase (matter) ,Analytical chemistry ,General Materials Science ,General Chemistry ,Neutron scattering ,Intensity (heat transfer) - Abstract
Short-range order (SRO) in model γ-phases of several Ni-based superalloys is investigated by elastic diffuse neutron scattering as a function of temperature. The composition of the single-crystalline samples has been modified by small amounts of additional elements like Mo, Re, Ru and W in order to study their influence on SRO, which is clearly dominated by peaks of the {1 1/2 0} type. The intensity of SRO scattering remains nearly unchanged up to 600 °C, above this temperature SRO decreases gradually and finally vanishes around 1000 °C. Correlation lengths do not change significantly with temperature. more...
- Published
- 2002
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