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Fractal morphologies from decomposition of Fe−Ni−Invar alloys

Published online by Cambridge University Press:  31 January 2011

Q. Li ,
A. Wiedenmann  and
H. Wollenberger
Q. Li
Affiliation:
Hahn-Meitner-Institut Berlin, Glienicker Str. 100, D-14109 Berlin, Germany
A. Wiedenmann
Affiliation:
Hahn-Meitner-Institut Berlin, Glienicker Str. 100, D-14109 Berlin, Germany
H. Wollenberger
Affiliation:
Hahn-Meitner-Institut Berlin, Glienicker Str. 100, D-14109 Berlin, Germany
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Abstract

Small angle neutron scattering investigations performed on Fe1−x–Nix alloys with 0.26 ≤ x ≤ 0.45 revealed a thermodynamically driven decomposition below 800 °C. The miscibility gap extends at least from 30 at.% Ni to 45 at.% Ni. The diffusioncontrolled decomposition produces fractal morphologies during the early stages of the process. During annealing the structure of the precipitated phase densifies continuously from mass fractals with small dimensionality (1 ≤ dm ≤ 3) to surface fractals with 2 ≤ ds ≤ 3. The results are compared with recent simulations of aggregation and growth as well as with a new analysis of spinodal decomposition, both predicting fractal morphologies.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 1 , January 1997 , pp. 83 - 92
Copyright
Copyright © Materials Research Society 1997

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References

REFERENCES

1.Kubaschewski, O., Iron Binary Phase Diagrams (Springer-Verlag, Berlin, Heidelberg, New York, 1982), p. 73.Google Scholar
2.Russell, K. C. and Garner, F. A., Acta Metall. (1988).Google Scholar
3.Wassermann, E. F., Ferromagnetic Mater. V, edited by Buschow, K. H. J. (1990).Google Scholar
4.Chamberod, A., Langier, J., and Penisson, J. M., J. Magn. Magn. Mater. 10, 139 (1979). F. A. Garner, H. R. Brager, R. A. Dodd, and T. Lauritzen Nucl. Instrum. Methods B16, 224 (1986).CrossRefGoogle Scholar
5.Wiedenmann, A., Wagner, W., and Wollenberger, H., Scripta Metall. 23, 603 (1989); Physica B 156, 62 (1989).CrossRefGoogle Scholar
6.Wiedenmann, A., Wagner, W., and Wollenberger, H., J. Less-Comm. Metals 145, 47 (1988).CrossRefGoogle Scholar
7.Becker, E., Dissertation, Fachbereich Physik, Universität Duisburg (1990).Google Scholar
8.Wiedenmann, A., Li, Q., Wagner, W., and Petry, W., Physica B 180, 793 (1992).CrossRefGoogle Scholar
9.Lindner, P. and Hess, S., Physica B 156, 512 (1989).CrossRefGoogle Scholar
10.Komura, S., Lippmann, G., and Schmatz, W., J. Appl. Crystallogr. 7, 232 (1974).CrossRefGoogle Scholar
11.Simon, J-P., Lyon, O., Fandot, F., Boulanger, L., and Dimitrov, O., Acta Metall. 40, 2693 (1992).CrossRefGoogle Scholar
12.Russell, K. C. and Garner, F. A., Physical Metallurgy, edited by Russell, K. C. and Smith, D. F., Conf. Feb. 27–Mar. 3, 1989, Las Vegas, Nevada.Google Scholar
13.Millon, B., Ruzickova, J., Velisek, J., and Vrestal, J., Mater. Sci. Eng. 50, 43 (1981).CrossRefGoogle Scholar
14.Wagner, R. and Kampmann, R., in Materials Science and Technology, edited by Haasen, P. (VCH, Verlo, Germany, 1991), Vol. 5.Google Scholar
15.Lifshitz, I. M. and Slyozov, V. U., J. Phys. Chem. Solids 19, 35 (1961).CrossRefGoogle Scholar
16.Teixeira, J., in On growth and form, fractal and non-fractal pattern in physics, edited by Stanley, E. and Ostrowsky, N.(M. Niijhoff Publishers, The Netherlands, 1986).Google Scholar
17.Hermann, H., Phys. Status. Solidi. B 163, 329 (1991).CrossRefGoogle Scholar
18.Schmidt, P. W., J. Appl. Crystallogr. 24, 414 (1991).CrossRefGoogle Scholar
19.Hornbogen, E., Int. Mater. Rev. 34, 277 (1989).CrossRefGoogle Scholar
20.Kolb, M., Jüllien, R., and Botet, R., Phys. Rev. Lett. 51, 1119 (1983); P. Meakin, Phys. Rev. Lett.. 51, 1123 (1983).Google Scholar
21.Windsor, C. G., Sinclair, R. N., Rainey, V. S., Normand, B., and Bowen, A. W., Phys. F Met. Phys. 17, L229 (1987).CrossRefGoogle Scholar
22.Cahn, J. W. and Hilliard, J. E., J. Chem. Phys. 25, 258 (1958).CrossRefGoogle Scholar
23.Furukawa, M., Physica 123A, 497 (1984).CrossRefGoogle Scholar
24.Binder, K., in Materials Science and Technology, edited by Haasen, P. (VCH, Verlagsgesellschaft, Germany (1991), Vol. 5.Google Scholar
25.Klein, W., Phys. Rev. Lett. 65, 1462 (1990).CrossRefGoogle Scholar
26.Coniglio, A. and Zanetti, M., Europhys. Lett. 10, 575 (1989).CrossRefGoogle Scholar