Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-10T16:32:38.057Z Has data issue: false hasContentIssue false
  • English
  • Français

Primary precipitation of icosahedral quasicrystal with rearrangement of constitutional elements in Zr65Al7.5Cu27.5 glassy alloy with low oxygen impurity

Published online by Cambridge University Press:  03 March 2011

Junji Saida ,
Hidemi Kato  and
Akihisa Inoue
Junji Saida*
Affiliation:
Center for Interdisciplinary Research, Tohoku University, Sendai 980-8578, Japan
Hidemi Kato
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
Akihisa Inoue
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
*
a) Address all correspondence to this author. e-mail: jsaida@cir.tohoku.ac.jp
Get access

Abstract

The primary transformation reaction of the Zr65Al7.5Cu27.5 ternary glassy alloy with a low oxygen impurity of approximately 100 mass ppm was investigated. We have discovered the precipitation of the metastable icosahedral phase with a fine grain size of 50–100 nm in diameter accompanying with the formation of stable Zr2Cu phase at the annealing temperatures ranging from 715 to 730 K. The lattice spacing of Zr2Cu phase decreases at higher temperatures, which is attributed to the rearrangement of Zr and Cu in the decomposition of the icosahedral phase. It is suggested that the formation of the icosahedral phase in the primary stage originates from the existence of the quenched-in icosahedral local atomic configuration in the glassy state.

Keywords

Metallic glassPhase transformationQuasicrystal
Type
Rapid Communications
Information
Journal of Materials Research , Volume 20 , Issue 2 , February 2005 , pp. 303 - 306
Copyright
Copyright © Materials Research Society 2005

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

REFERENCES

1.Inoue, A.: In Bulk Amorphous Alloys (Trans Tech Publications, Zurich, Switzerland, 1998), p. 1.Google Scholar
2.Johnson, W.L.: Bulk glass-forming metallic alloys: Science and technology. MRS Bull. 24(10),42 (1999).CrossRefGoogle Scholar
3.Zhang, T., Inoue, A. and Masumoto, T.: Amorphous Zr-Al-TM (TM = Co, Ni, Cu) alloys with significant supercooled liquid region of over 100 K. Mater. Trans. JIM 32, 1005 (1991).CrossRefGoogle Scholar
4.Köster, J.: Meinhardt, S. Roos, and H. Liebertz: Formation of quasicrystals in bulk glass forming Zr-Cu-Ni-Al alloys. Appl. Phys. Lett. 69, 179 (1996).Google Scholar
5.Xing, L.Q., Eckert, J., Löser, W. and Schultz, L.: Effect of cooling rate on the precipitation of quasicrystals from the Zr-Cu-Al-Ni-Ti amorphous alloy. Appl. Phys. Lett. 73, 2110 (1998).CrossRefGoogle Scholar
6.Chen, M.W., Zhang, T., Inoue, A., Sakai, A. and Sakurai, T.: Quasicrystals in a partially devitrified Zr65Al7.5Ni10Cu12.5Ag5 bulk metallic glass. Appl. Phys. Lett. 75, 1697 (1999).Google Scholar
7.Xing, L.Q., Hufnagel, T.C., Eckert, J., Löser, W. and Schultz, L.: Relation between short-range order and crystallization behavior in Zr-based amorphous alloys. Appl. Phys. Lett. 77, 1970 (2000).Google Scholar
8.Saida, J., Matsushita, M. and Inoue, A.: Direct observation of icosahedral cluster in Zr70Pd30 binary glassy alloy. Appl. Phys. Lett. 79, 412 (2001).CrossRefGoogle Scholar
9.Saida, J., Matsubara, E. and Inoue, A.: Nanoquasicrystallization in metallic glasses. Mater. Trans. 44, 1971 (2003).Google Scholar
10.Inoue, A., Zhang, T., Saida, J., Matsushita, M., Chen, M.W. and Sakurai, T.: Formation of icosahedral quasicrystalline phase in Zr-Al-Ni-Cu-M (M=Ag, Pd, Au or Pt) systems. Mater. Trans. JIM 40, 1181 (1999).Google Scholar
11.Eckert, J., Mattern, N., Zinkevitch, M. and Seidel, M.: Crystallization behavior and phase formation in Zr-Al-Cu-Ni metallic glass containing oxygen. Mater. Trans. JIM 39, 623 (1998).Google Scholar
12.Murty, B.S., Ping, D.H., Hono, K. and Inoue, A.: Direct evidence for oxygen stabilization of icosahedral phase during crystallization of Zr65Cu27.5Al7.5 metallic glass. Appl. Phys. Lett. 76, 55 (2000).Google Scholar
13.Inoue, A., Zhang, T. and Masumoto, T.: The structural relaxation and glass transition of La-Al-Ni and Zr-Al-Cu amorphous alloys with a significant supercooled liquid region. J. Non-Cryst. Solids 150, 396 (1992).CrossRefGoogle Scholar
14.Murty, B.S., Ping, D.H., Hono, K. and Inoue, A.: Influence of oxygen on the crystallization behavior of Zr65Cu27.5Al7.5 and Zr66.7Cu33.3 metallic glasses. Acta Mater. 48, 3985 (2000).Google Scholar
15.Saida, J., Li, C., Matsushita, M. and Inoue, A.: Investigation of the stability of glassy state in the Zr- and Hf-based glassy alloys correlated with their transformation behavior. J. Mater. Res. 16, 3389 (2001).Google Scholar