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Phase-Field Simulation of Antiphase Boundary Migration in Intermetallic Compounds with Solute and Vacancy Segregation

Published online by Cambridge University Press:  09 March 2011

Yuichiro Koizumi ,
Tatsuya Yokoi ,
Masayuki Ouchi ,
Yoritoshi Minamino ,
Masato Yoshiya  and
Samuel M. Allen
Yuichiro Koizumi
Affiliation:
Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-0011, Japan
Tatsuya Yokoi
Affiliation:
Department of Adaptive Machine Systems, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Masayuki Ouchi
Affiliation:
Department of Adaptive Machine Systems, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Yoritoshi Minamino
Affiliation:
Department of Adaptive Machine Systems, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Masato Yoshiya
Affiliation:
Department of Adaptive Machine Systems, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Samuel M. Allen
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
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Abstract

The effects of solute and vacancy segregation on APB migration in Ti3Al, and their dependence on composition, have been investigated by using a phase-field simulation in which vacancy distribution is taken into account. Al-atoms are depleted and vacancies segregate at APB in stoichiometric Ti3Al (Ti-25Al), whereas Al-atoms segregate and vacancies are depleted in Alrich one (Ti-28Al). The simulation indicates that APB in Ti3Al migrates much faster in Ti-25Al than in Ti-28Al with the effect of vacancy segregation whereas it migrates slightly faster in Ti-28Al than in Ti-25Al in the absence of the effect of vacancy segregation.

Keywords

simulationphase transformationmicrostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1295: Symposium N – Intermetallic-Based Alloys for Structural and Functional Applications , 2011 , mrsf10-1295-n09-04
Copyright
Copyright © Materials Research Society 2011

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References

REFERENCES

1. Koizumi, Y., Minamino, Y., Nakano, T., and Umakoshi, Y., Philos. Mag. 88, 465 (2008).Google Scholar
2. Yasuda, H. Y., Nakano, K., Nakajima, T., Ueda, M., and Umakoshi, Y., Acta Mater 51, 5101 (2003).Google Scholar
3. Yasuda, H. Y., Aoki, M., Takaoka, A., and Umakoshi, Y., Scripta Mater. 53, 253 (2005).Google Scholar
4. Yasuda, H. Y., Aoki, M., and Umakoshi, Y., Acta Mater. 55, 2407 (2007).Google Scholar
5. Koizumi, Y., Katsumura, H., Minamino, Y., Tsuji, N., Lee, J. G., and Mori, H., Sci. Tech. Adv. Mater. 5, 19 (2004).Google Scholar
6. Cupschalk, S. G. and Brown, N., Philos. Mag., 1077 (1966).Google Scholar
7. Koizumi, Y., Allen, S. M., and Minamino, Y., Acta Mater. 56, 5861 (2008).Google Scholar
8. Koizumi, Y., Allen, S. M., and Minamino, Y., Acta Mater. 57, 3039 (2009).Google Scholar
9. Mishin, Y. and Herzig, C., Acta Mater. 48, 589 (2000).Google Scholar
10. Ohnuma, I., Fujita, Y., Mitsui, H., Ishikawa, K., Kainuma, R., and Ishida, K., Acta Mater. 48, 3113 (2000).Google Scholar
11. Park, W., Thesis, Massachusetts Institute of Technology, 1988.Google Scholar
12. Cahn, J. W. and Hilliard, J. E., J. Chem. Phys. 28, 258 (1958).Google Scholar
13. Allen, S. M. and Cahn, J. W., Acta Metall. 27, 1085 (1979).Google Scholar
14. Rüsing, J. and Herzig, C., Intermetallics 4, 647 (1996).Google Scholar
15. Oki, K., Masuda, J.-i., and Hasaka, M., Trans. Japan Inst. Metals 6, 589 (1975).Google Scholar
16. Cahn, J. W., Acta Metallurgica 10, 789 (1962).Google Scholar