Paper Titles
Stability and Shrinkage by Diffusion in Hollow Nanotubes
p.39
A Molecular Dynamics Study of Self-Diffusion in the Core of a Screw Dislocation in Al
p.49
A Mathematical Formulation for Interfacial Diffusion, Incorporating Deviation from the Classical Random Walk Theory
p.63
First-Principles Computation of Transition-Metal Diffusion Mobility
p.73
An Examination of Diffusion Paths in Terms of Interdiffusion Fluxes and Interdiffusion Coefficients
p.83
Diffusion in Metallic Melts
p.101
Diffusion in Bulk Glass Forming Alloys– from the Glass to the Equilibrium Melt
p.109
Non-Random Interaction of Vacancies with Atoms during Interdiffusion and Ionic Conductivity in Materials
p.119
Interdiffusion Behavior in γ-Phase U-Mo Alloy versus Al-6061 Alloy Couples Fabricated by Friction Stir Welding
p.131

An Examination of Diffusion Paths in Terms of Interdiffusion Fluxes and Interdiffusion Coefficients

Article Preview

Abstract:

Selected diffusion couples investigated in the Cu-based and Fe-based multicomponent systems are examined for diffusion path development, zero-flux planes, uphill diffusion, and internal constraints for diffusion paths. The couples are analyzed for interdiffusion fluxes and interdiffusion coefficients with the aid of the “MultiDiFlux” program. Eigenvalues and eigenvectors are also determined from the interdiffusion coefficients determined over various ranges of composition in the diffusion zone. Slopes of diffusion paths at selected sections, including the path ends, are related to interdiffusion coefficients, interdiffusion fluxes and/or eigenvectors. These relations are explored with selected single phase diffusion couples in the Cu-Ni-Zn and Fe-Ni-Al systems and the calculated path slopes are compared with those directly determined from the concentration profiles. Relations between the gradient of interdiffusion flux and the concentration gradient are examined for each component in a two-phase Cu-Ni-Zn diffusion couple. The research is supported by the National Science Foundation.

You might also be interested in these eBooks
Diffusion in Advanced Materials and Processing View Preview

Info:

Periodical:

Defect and Diffusion Forum (Volume 266)

Pages:

83-99

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.266.83

Citation:

Cite this paper

Online since:

September 2007

Authors:

Kevin M. Day, Mysore A. Dayananda

Keywords:

Diffusion Path Slopes, Interdiffusion Coefficient, Interdiffusion Fluxes , Multicomponent Diffusion

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] Dayananda, M.A., Metallurgical Transactions A, 1983. 14A(9): pp.1851-1858.

Google Scholar

[2] Dayananda, M.A. and C.W. Kim, Metallurgical Transactions A, 1979. 10A(9): pp.1333-1339.

Google Scholar

[3] Dayananda, M.A. and Y.H. Sohn, Metallurgical and Materials Transactions A, 1999. 30A(3): pp.535-43.

Google Scholar

[4] Dayananda, M.A., Journal of Phase Equilibria and Diffusion, 2005. 26(5): pp.441-446.

Google Scholar

[5] Dayananda, M.A. and L.R. Ram-Mohan, MultiDiFlux. 1995, https: /engineering. purdue. edu/MSE/Fac_Staff/Faculty/dayananda. wshtml: Purdue University.

Google Scholar

[6] Day, K.M., L.R. Ram-Mohan, and M.A. Dayananda, Journal of Phase Equilibria and Diffusion, 2005. 26(6): pp.579-590.

Google Scholar

[7] Kulkarni, K. and M.A. Dayananda, Proceedings on Phase Stability, Diffusion and Their Applications, TMS Fall meeting 2006: pp.155-162.

Google Scholar

[8] Ram-Mohan, L.R. and M.A. Dayananda,. Acta Materialia, 2006. 54(9): pp.2325-2334.

Google Scholar

[9] Ram-Mohan, L.R. and M.A. Dayananda, Journal of Phase Equilibria and Diffusion, 2006. 27(6): pp.566-571.

Google Scholar

[10] Kulkarni, K., et al., Philosophical Magazine, 2007(In Print).

Google Scholar

[11] Dayananda, M.A., Journal of Phase Equilibria and Diffusion, 2006. 27(6): pp.572-581.

Google Scholar

[12] Onsager, L., Physical Review, 1931. 37(4): pp.405-426.

Google Scholar

[13] Boltzmann, L., Ann. Physik Leipzig, 1894. 53: pp.959-964.

Google Scholar

[14] Kim, C. -W., Zero-Flux Planes, Flux Reversals and Diffusion Paths in Ternary Diffusion. PhD Thesis. 1982: Purdue University.

DOI: 10.2172/5743943

Google Scholar

[15] Kim, C.W. and M.A. Dayananda, Metallurgical Transactions A, 1983. 14A(5): pp.857-864.

Google Scholar

[16] Gupta, P.K. and A.R. Cooper, Jr., Physica, 1971. 54(1): pp.39-59.

Google Scholar

[17] Toor, H.L., A.I. Ch.E. Journal, 1964. 10(4): pp.448-455.

Google Scholar

[18] Kim, J., Interdiffusion and Double Serpentine Diffusion Paths in Fe-Ni-Al Alloy System. M.S. Thesis. 2001: Purdue University.

Google Scholar

[19] Liu, C. -L., Multiphase Diffusion in Cu-Ni-Zn Ternary System. PhD Thesis. 1989: Purdue University.

Google Scholar

[20] Kim, C.W. and M.A. Dayananda, Metallurgical Transactions A, 1984. 15A(4): pp.649-659.

Google Scholar