Hostname: page-component-cd9895bd7-dzt6s Total loading time: 0 Render date: 2024-12-30T22:40:29.735Z Has data issue: false hasContentIssue false
  • English
  • Français

Phase Stability of Crystalline and Amorphous Phases and Formation of Nanostructure in Zr-Pd and Zr-Pt Alloys Under Electron Irradiation

Published online by Cambridge University Press:  01 February 2011

Yukichi Umakoshi ,
Takeshi Nagase  and
Takashi Hosokawa
Yukichi Umakoshi
Affiliation:
umakoshi@mat.eng.osaka-u.ac.jp, Osaka University, Division of Materials and Manufacturing Science, Graduate School of Engineering, 2-1, Yamada-oka, Suita, 565-0871, Japan
Takeshi Nagase
Affiliation:
t-nagase@mat.eng.osaka-u.ac.jp, Osaka University, Division of Materials and Manufacturing Science, Graduate School of Engineering, 2-1, Yamada-oka, Suita, 565-0871, Japan
Takashi Hosokawa
Affiliation:
takashi/hosokawa@mat.eng.osaka-u.ac.jp, Osaka University, Division of Materials and Manufacturing Science, Graduate School of Engineering, 2-1, Yamada-oka, Suita, 565-0871, Japan
Get access

Abstract

Electron irradiation induced phase transition behavior of Zr-Pd and Zr-Pt alloys was investigated focusing on phase selection in crystallization by thermal annealing and electron irradiation. Nano quasi-crystalline (QC) phase was formed by thermal crystallization in Zr66.7Pd33.3 and Zr80Pt20 alloys, while nano two-type f.c.c. super-saturated solid solutions were formed by irradiation induced crystallization at 298K. In Zr66.7Pt33.3 alloy, polycrystalline Zr5Pt3 and Zr9Pt11 phases transformed to two-type f.c.c. nano-crystalline phase through an amorphous state by crystal-to-amorphous-to-crystal (C-A-C) transition during electron irradiation. Nano-composite phase composed of f.c.c. super-saturated solid solution and residual amorphous phase was stable rather than an amorphous single phase, thermal equilibrium crystalline phase and quasi-crystalline phase under 2.0MV electron irradiation at 298K, resulting in the formation of nano-composite structure by irradiation induced amorphization and crystallization.

Keywords

metalamorphousnanostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1048: Symposium Z – Bulk Metallic Glasses–2007 , 2007 , 1048-Z08-03
Copyright
Copyright © Materials Research Society 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Thomas, G., Mori, H., Fujita, H., and Sinclair, R.: Scripta Mater., 16, 589 (1982).Google Scholar
2. Mori, H., Fujita, H.: Jpn. J. Appl. Phys., 21, L494 (1982).Google Scholar
3. Mori, H., in: Current Topics in Amorphous Materials, Physics and Technology, edited by Sakurai, Y., Hamakawa, Y., Masumoto, T., Shirac, K. and Suzuki, K., Elsevier Science Publishers, Amsterdam, (1997), p. 120.Google Scholar
4. Okamoto, P. R., Lam, N. Q. and Rein, L. E., in: Physics of Crystal-to-glass transformations, edited by Ehrenreich, H. and Spaepen, F., volume 52 of Solid State Physics, Academic Press, San Diego, (1999).Google Scholar
5. Nagase, T. and Umakoshi, Y.: Mater. Trans., 47, 1469 (2006).Google Scholar
6. Umakoshi, Y., Nagase, T. and Hosokawa, T.: Mater. Trans., 48, 1644 (2007).Google Scholar
7. Nagase, T., Hosokawa, T. and Umakoshi, Y., Scripta Mater., 53, 1401 (2005).Google Scholar
8. Nagase, T., Hosokawa, T. and Umakoshi, Y.: Intermetallics, 14, 1027 (2006).Google Scholar
9. Nagase, T., Hosokawa, T. and Umakoshi, Y.: Metall. Mater. Trans., A 38, 223 (2007).Google Scholar
10. Saida, J., Matsushita, M. and Inoue, A.: Appl. phys. Lett., 77, 1102 (2000).Google Scholar
11. Saida, J., Matsushita, M. and Inoue, A.: J. of alloys and compounds, 342, 18 (2002).Google Scholar
12. Nagase, T., Nino, A., Hosokawa, T. and Umakoshi, Y.: Mater. Trans., 48, 1651 (2007).Google Scholar
13. Takeuchi, A. and Inoue, A.: Mater. Trans., 41, 1372 (2000).Google Scholar