Kinetics Parameters of Atomic Migration and Diffuse Scattering of Radiations within the F.C.C.-Ni–Al Alloys

D.S. Leonov; Taras M. Radchenko; Valentin A. Tatarenko; Yu.A. Kunitsky

doi:10.4028/www.scientific.net/DDF.273-276.520

Paper Titles

Kinetic Description of the Mass Transfer in Ladle Metallurgy Operations
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Estimation of the Rate of Hydrogen Penetration in a Welded API 5L Steel Pipe
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Mössbauer Spectroscopy Studies of Grain Boundaries in Nanostructured Metals
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Effect of Doping, Composite Geometry and Diffusion Annealing Schedules on the Structure of Nb₃Sn Layers in Nb/Cu-Sn Wires
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Kinetics Parameters of Atomic Migration and Diffuse Scattering of Radiations within the F.C.C.-Ni–Al Alloys
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Atomic-Ordering Kinetics and Diffusivities in Ni–Fe Permalloy
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Al-Li Surface Alloying in the Electrolytic Method
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Investigation of Homogenization Treatment in Al- Li- Cu- Zr Alloys
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Effect of Antioxidants and Atmosphere on the Phase Formation and Microstructure of In Situ MgO-Al₂O₃ Spinels
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Kinetics Parameters of Atomic Migration and Diffuse Scattering of Radiations within the F.C.C.-Ni–Al Alloys

Abstract:

Relaxation of diffuse-scattering intensities of various kinds of waves is a phenomenon of an especial interest since its study enables one to obtain the most detailed information on both the equilibrium short-range order (SRO) and the non-equilibrium SRO, and therefore, it is the most convenient instrument for investigating SRO kinetics. The SRO kinetics is studied by the use of available data of measurements of residual electrical resistivity for substitutional f.c.c.-Ni–Al solid solutions during their isothermal annealing. Within the framework of the first-order and (more realistic) second-order kinetics models, the maximum characteristic relaxation times and equilibrium magnitudes of the residual electrical resistivity for these solid solutions at different annealing (1273–1626 K) and quenching temperatures (≥ 1723 K) are evaluated, and the hypothetical values of similar quantities appropriate for the diffuse scattering of radiations are estimated too.