Diffusion in a temperature gradient – A single cycle method to determine frequency factor and activation energy of solid diffusion coefficients in alloys
Source abstract
Abstract
Abstract An experimental procedure for determining the temperature dependence of diffusion coefficients in a single diffusion heat treatment is introduced. Diffusion in a temperature gradient in samples with initially symmetric “roof-shaped” concentration profiles of a suitable length scale and concentration range yields asymmetric profiles that allow the determination of the frequency factor D 0 and the activation energy Q D . The binary system Al–Cu is used as an example. The procedure is applicable to alloy systems with finite solute solubility.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · High Temperature Alloys and Creep · Intermetallics and Advanced Alloy Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. First principles calculation of the interdiffusion coefficient in binary alloys10.1103/PhysRevLett.94.045901 ↗
2. Impurity diffusion activation energies in al from first principles10.1103/PhysRevB.79.054304 ↗
3. Glicksman · 2000
4. Seith · 1955
5. Impurity diffusion in aluminum10.1103/PhysRevB.1.3264 ↗
6. Diffusion of solutes in aluminium and dilute aluminum alloys10.1103/PhysRevB.1.3274 ↗
7. Interdiffusion in dilute aluminium–copper solid solutions10.1016/0001-6160(61)90159-6 ↗
8. Diffusion of copper in nickel and aluminum10.1063/1.1713963 ↗
9. Impurity diffusion in aluminum10.1016/0022-3115(78)90275-1 ↗
10. Y. Funamizu, K. Watanabe, Interdiffusion in Al solid solution of the Al–Cu system, Bulletin of the Faculty of Engineering, Hokkaido University, vol. 62, 1971, pp. 57–64.
11. Interdiffusion in the aluminum-rich solid-solution of Al–Cu alloys10.1007/BF00726994 ↗
12. Diffusion: novel measurement methods
13. Solvus composition paths in multicomponent alloys-experimental approach and correlation with calphad calculations for the example Al–Mg–Si10.1002/adem.201100265 ↗
14. Use of phase boundary motion to determine interdiffusion coefficients10.1007/BF02642474 ↗
15. Contribution to study of hetero-diffusion in aluminium
16. Impurity-diffusion of copper in aluminum
17. Bemerkung zur Schichtkristallbildung
18. Temperature gradient zone melting
19. Migration of a liquid zone though a solid 110.1063/1.1729806 ↗
20. Preparation of the initial solid/liquid interface and melt in directional solidification10.1016/S0022-0248(03)01041-8 ↗
21. Initial transients during solid/liquid phase transformations in a temperature gradient10.1016/j.jcrysgro.2007.03.001 ↗
22. Microstructure evolution during melting and resolidification in a temperature gradient10.1016/j.jcrysgro.2005.06.044 ↗
23. Influence of thermal stabilization on the solute concentration of the melt in directional solidification10.1016/j.jcrysgro.2010.09.053 ↗
24. Preparation of the initial solid-liquid interface and melt in directional solidification of al-18 at%ni peritectic alloy10.1016/j.jcrysgro.2010.05.018 ↗
25. Resolidification of the mushy zone of multiphase and multicomponent alloys in a temperature gradient – experiments and modeling10.1016/j.actamat.2015.03.030 ↗
26. Calculation of diffusion processes in the presence of a temperature gradient10.1016/0036-9748(83)90391-5 ↗
27. Diffusion coefficients of some solutes in fcc and liquid Al: critical evaluation and correlation10.1016/S0921-5093(03)00624-5 ↗
28. Prediction of diffusivities in fcc phase of the Al–Cu–Mg system: first-principles calculations coupled with CALPHAD technique10.1016/j.commatsci.2014.03.057 ↗
29. Zigzag diffusion paths in multiphase diffusion couples10.1016/0956-7151(94)90454-5 ↗