Paper Titles

Diffusion Impurity Drag of Twin Grain Boundaries and Triple Junctions Motion in Zinc
p.578

Faceting of Ʃ3 Grain Boundaries in Cu: Three-Dimensional Wulff Diagrams
p.584

Computer Simulation of Phase Decomposition in Magnetic Materials Based on the Phase-Field Method
p.593

The Temperature Influence on the Faceting of Ʃ3 Grain Boundaries in Aluminium
p.603

Atomic Migration as a Mechanism of Superstructure Formation in Intermetallic Compounds
p.609

Aging of Oxides under Irradiation
p.621

Modelling, Simulations and Monitoring of Lamella Structure Formation in Titanium Alloys Controlled by Diffusion Redistribution
p.635

Modelling of Phase Transformations in Substitutional Alloys
p.647

Thermo Mechanical Treatment of Nickel and Titanium Aluminides
p.653

HomeDefect and Diffusion ForumDefect and Diffusion Forum Vols. 237-240Atomic Migration as a Mechanism of Superstructure...

Atomic Migration as a Mechanism of Superstructure Formation in Intermetallic Compounds

Article Preview

Abstract:

“Order-order” relaxations driven by atomic migration in superstructures proceed in nonsteady- state of a system, which relaxes to the equilibrium atomic configuration. Hence, the corresponding studies are complementary to standard steady-state diffusion investigations. Two time scales operating in “order-order” relaxations in L12-ordered (Ni3Al) and L10-ordered (FePd, FePt) binary intermetallics were experimentally observed. On the other hand, in B2-ordered NiAl – known of a giant vacancy concentration, “order-order” relaxations appeared surprisingly slow. Definite relationships between the activation energies for diffusion ( ) D A E and “order-order” relaxations ( ) O O A E − were revealed: ( ) D A E < ( ) O O A E − in L12-type superstructure; ( ) D A E ³ ( ) O O A E − in L10- and in B2-type superstructures. Corresponding simulation studies elucidated the specific atomistic mechanism of the processes. It has been shown that different time scales active in “order-order” relaxations in L12 and L10-ordered systems follow from specific atomic-jump correlations, which result from non-steady-state conditions and particular superlattice geometries: the availability of easy diffusion channels. A model of “order-order” kinetics in NiAl as controlled by a triple-defect mechanism is proposed.

You might also be interested in these eBooks

Diffusion in Materials - DIMAT2004

Info:

Periodical:

Defect and Diffusion Forum (Volumes 237-240)

Pages:

609-620

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.237-240.609

Citation:

Cite this paper

Online since:

April 2005

Authors:

Rafał Leszek Abdank-Kozubski, Mirosław Kozłowski, S. Czekaj, Veronique Pierron-Bohnes, Wolfgang Pfeiler

Keywords:

Chemical Ordering Kinetics, Intermetallic, Monte-Carlo Simulation, Resistometry

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2005 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] R. Kozubski, Prog. Mater. Sci. Vol. 41 (1997), p.1.

[2] R. Kozubski, D. Kmieć, E. Partyka, and M. Danielewski, Intermetallics Vol. 11 (2003), p.897.

DOI: 10.1016/s0966-9795(03)00099-2

[3] L. Messad, S. Czekaj, H. Bouzar, M. Zemirli, V. Pierron-Bohnes, M.C. Cadeville, R. Kozubski, Colloque Scientifique Algéro-Français TAM-MAT 2003 Les Matériaux émergents, Tamanrasset, Algeria, (2003).

[4] R. Kozubski, S. Czekaj, M. Kozłowski, E. Partyka, K. Zapała, J. Alloys and Compounds - in press.

[5] P. Oramus, R. Kozubski, V. Pierron-Bohnes, M.C. Cadeville, W. Pfeiler, Phys. Rev. B Vol. 63 (2001), p.174109.

[6] P. Oramus, R. Kozubski, V. Pierron-Bohnes, M.C. Cadeville, C. Massobrio, W. Pfeiler, Mater. Sci. Eng. A Vol. 324 (2002), p.11.

DOI: 10.1016/s0921-5093(01)01275-8

[7] P. Oramus, M. Kozłowski, R. Kozubski. V. Pierron-Bohnes, M.C. Cadeville, W. Pfeiler, Mater. Sci. Eng. A Vol. 365 (2004), p.165.

DOI: 10.1016/j.msea.2003.09.023

[8] P. Oramus, C. Massobrio, M. Kozłowski, R. Kozubski, V. Pierron-Bohnes, M.C. Cadeville, W. Pfeiler, Comput. Mater. Sci. Vol. 27 (2003), p.186.

DOI: 10.1016/s0927-0256(02)00444-5

[9] R. Kozubski, M.C. Cadeville, J. Phys.F. : Met. Phys. Vol. 18 (1988), p.2569.

[10] R. Kozubski, J. Sołtys, M.C. Cadeville, V. Pierron-Bohnes, T.H. Kim, P. Schwander, J.P. Hahn, G. Kostorz , J. Morgiel, Intermetallics Vol. 1 (1993), p.139.

DOI: 10.1016/0966-9795(93)90009-k

[11] R.L. Rossiter The Electrical Resistivity of Metals and Alloys (Cambridge University Press, Cambridge, UK 1987).

[12] St. Frank, U. Södervall, Chr. Herzig, Phys. Stat. Sol. (b) Vol. 191 (1995), p.45.

[13] St. Frank, S.V. Divinski, U. Södervall, Chr. Herzig, Acta Mater. Vol. 49 (2001), p.1399.

[14] J. Fillon, D. Calais, J. Phys. Chem. Solids Vol. 38 (1977) 81.

[15] J. Kučera, B. Million, phys. stat. sol. (a) 31 (1975), p.275.

[16] Y. Nose, T. Ikeda, H. Nakajima, K. Tanaka, H. Numakura, Mater. Res. Soc. Symp. Proc. Vol. 753 (2003), p. BB5. 36. 1.

[17] Kulovits, W.A. Soffa, W. Püschl, W. Pfeiler, Mater. Res. Soc. Symp. Proc. Vol. 753 (2003), p. BB5. 37. 1.

[18] R. Kozubski, J. Sołtys, M.C. Cadeville, J. Phys.: Condensed Matter. Vol. 2 (1990), p.3451.

[19] R. Kozubski, M. Kozłowski, V. Pierron-Bohnes, W. Pfeiler, Z. Metallkde. - submitted for publication.

[20] T. Mohri, C. Ying, Mater. Trans. 43 (2002) 2104.

[21] T. Mehaddene, E. Kentzinger, B. Hennion, K. Tanaka, H. Numakura, A. Marty, V. Parasote, M.C. Cadeville, M. Zemirli, V. Pierron-Bohnes, Phys. Rev. B Vol. 69 (2004), p.024304.

DOI: 10.1103/physrevb.69.024304

[22] F.E. Spada, F.T. Parker, C.L. Platt, J.K. Howard, J. Appl. Phys. Vol. 94 (2003), p.5123.