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Analysis of Vacancy Agglomeration Processes by Matusita’s Method for B2 FeAl

Published online by Cambridge University Press:  14 March 2011

Kyosuke Yoshimi ,
Masafumi Tsunekane  and
Kouichi Maruyama
Kyosuke Yoshimi
Affiliation:
Graduate School of Environmental Studies, Tohoku University, Sendai, 980-8579, Japan
Masafumi Tsunekane
Affiliation:
Department of Materials Science and Engineering, University of Michigan, MI 48109-2099, U.S.A.
Kouichi Maruyama
Affiliation:
Graduate School of Environmental Studies, Tohoku University, Sendai, 980-8579, Japan
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Abstract

In this study, the exothermic DSC peaks observed in rapidly-solidified Fe-44.9at.%Al ribbons and water-quenched Fe-48.5at.%Al single crystals were analyzed by Matusita’s method in order to discuss the kinetics of the agglomeration processes of supersaturated vacancies. Both the nucleation and morphological factors, n and m, respectively were approximately 3 for the rapidly solidified ribbons and were approximately 2 for the water-quenched single crystals. Based on the Matusita’s idea, the m values suggest the growth of 3-dimensional voids in the rapidly solidified ribbons and the growth of 2-dimensional dislocations loops in the single crystals due to the agglomeration of supersaturated vacancies. In addition, the n values suggest that the nuclei of voids and dislocation loops existed in as-quenched samples. These interpretations are in good agreement with the results of TEM observations.

Keywords

differential thermal analysis (DTA)FeAl
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1295: Symposium N – Intermetallic-Based Alloys for Structural and Functional Applications , 2011 , mrsf10-1295-n05-09
Copyright
Copyright © Materials Research Society 2011

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References

REFERENCES

1. Ho, K. and Dodd, R.A., Scripta Metall. 12, 1055 (1978).Google Scholar
2. Kim, S.M., J. Phys. Chem. Solids 49, 65 (1988).Google Scholar
3. Würschum, R., Grupp, C. and Schaefer, H.E., Phys. Rev. Lett. 75, 97 (1995).Google Scholar
4. Paris, D., Lesbats, P. and Levy, J., Scripta Metall. 9, 1373 (1975).Google Scholar
5. Wever, D., Meurtin, M., Paris, D., Fourdeux, A. and Lesbats, P., J. Phys (Paris) C7, 332 (1977).Google Scholar
6. Kogachi, M. and Haraguchi, T., Mater. Sci. Eng. A230, 124 (1997).Google Scholar
7. Yoshimi, K., Hanada, S., Haraguchi, T., Kato, H., Itoi, T. and Inoue, A., Mater. Trans. 43, 2897 (2002).Google Scholar
8. Haraguchi, T., Yoshimi, K., Yoo, M.H., Kato, H., Hanada, S. and Inoue, A., Acta Mater. 52, 3751 (2005).Google Scholar
9. Morris, M.A., George, O. and Morris, D.G., Mater. Sci. Eng. A258, 99 (1998).Google Scholar
10. Yoshimi, K., Tsunekane, M., Nakamura, R., Yamauchi, A. and Hanada, S., Appl. Phys. Lett. 89, 073110 (2006).Google Scholar
11. Tsunekane, M., Yoshimi, K. and Maruyama, K., Acta Mater. 56, 3162 (2008).Google Scholar
12. Zaroual, S., Sassi, O., Aride, J., Bernardini, J. and Mayo, G., Mater. Sci. Eng. A279, 282 (2000).Google Scholar
13. Yang, Y. and Baker, I., in High-Temperature Ordered Intermetallic Alloys VIII, edited by George, E.P., Mills, M.J. and Yamaguchi, M., (Mater. Res. Soc. Proc. 552, Warrendale, PA, 1999) pp. KK8.22.1.Google Scholar
14. Yoshimi, K., Tsunekane, M. and Maruyama, K., Intermetallics 18, 1265 (2010)Google Scholar
15. Matusita, K., Komatsu, T. and Yokota, R., J. Mater. Sci. 19, 291 (1984).Google Scholar
16. Rivière, J.P., Zonon, H. and Grilhe, J., Phys. Stat. Sol. 16, 545 (1973).Google Scholar