Atomic transport in B2-ordered Al(Fe,Ni) alloys: Tracer-interdiffusion couple approach
| Autor: | Vladimir A. Esin, B.S. Murty, Sergiy V. Divinski, Kaustubh N. Kulkarni, Gerhard Wilde, G. Mohan Muralikrishna |
|---|---|
| Přispěvatelé: | Centre des Matériaux (MAT), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Metals and Alloys Thermodynamics 02 engineering and technology General Chemistry [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology 01 natural sciences Measure (mathematics) Molar volume Mechanics of Materials Homogeneous TRACER 0103 physical sciences Materials Chemistry Diffusion (business) 0210 nano-technology ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Intermetallics Intermetallics, Elsevier, 2020, 126, pp.106920. ⟨10.1016/j.intermet.2020.106920⟩ |
| ISSN: | 0966-9795 |
| DOI: | 10.1016/j.intermet.2020.106920⟩ |
| Popis: | A novel tracer-interdiffusion couple technique is utilized to measure the concentration-dependent tracer- (59Fe) diffusion coefficients in the B2-ordered Al50(Ni,Fe)50 alloys at 1373 K in a single experiment. The influence of variable molar volume on the diffusion coefficients is examined. The tracer diffusion coefficients determined under chemical gradients are shown to be in an excellent agreement with the diffusivities measured independently for homogeneous alloys. The tracer diffusion coefficients of Fe are observed to increase strongly with an increase of the Fe concentration. Strong up-hill diffusion of Al hinders a reliable determination of the interdiffusion coefficients with a single diffusion couple. The results confirm a high potential of the tracer-interdiffusion couple technique for producing highly accurate concentration-dependent mobility data in multi-component systems. |
| Databáze: | OpenAIRE |
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