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.
Similar content being viewed by others
References
A. Inoue: In Bulk Amorphous Alloys (Trans Tech Publications, Zurich, Switzerland, 1998), p. 1.
W.L. Johnson: Bulk glass-forming metallic alloys: Science and technology, MRS Bull. 24 (10),42 (1999).
T. Zhang, A. Inoue and T. Masumoto: Amorphous Zr-Al-TM (TM = Co, Ni, Cu) alloys with significant supercooled liquid region of over 100 K, Mater. Trans. JIM 32, 1005 (1991).
J. Köster: Meinhardt, S. Roos, and H. Liebertz: Formation of quasicrystals in bulk glass forming Zr-Cu-Ni-Al alloys, Appl. Phys. Lett. 69, 179 (1996).
L.Q. Xing, J. Eckert, W. Löser and L. Schultz: Effect of cooling rate on the precipitation of quasicrystals from the Zr-Cu-Al-Ni-Ti amorphous alloy, Appl. Phys. Lett. 73, 2110 (1998).
M.W. Chen, T. Zhang, A. Inoue, A. Sakai and T. Sakurai: Quasicrystals in a partially devitrified Zr65Al7.5Ni10Cu12.5Ag5 bulk metallic glass, Appl. Phys. Lett. 75, 1697 (1999).
L.Q. Xing, T.C. Hufnagel, J. Eckert, W. Löser and L. Schultz: Relation between short-range order and crystallization behavior in Zr-based amorphous alloys, Appl. Phys. Lett. 77, 1970 (2000).
J. Saida, M. Matsushita and A. Inoue: Direct observation of icosahedral cluster in Zr70Pd30 binary glassy alloy, Appl. Phys. Lett. 79, 412 (2001).
J. Saida, E. Matsubara and A. Inoue: Nanoquasicrystallization in metallic glasses, Mater. Trans. 44, 1971 (2003).
A. Inoue, T. Zhang, J. Saida, M. Matsushita, M.W. Chen and T. Sakurai: Formation of icosahedral quasicrystalline phase in Zr-Al-Ni-Cu-M (M=Ag, Pd, Au or Pt) systems, Mater. Trans. JIM 40, 1181 (1999).
J. Eckert, N. Mattern, M. Zinkevitch and M. Seidel: Crystallization behavior and phase formation in Zr-Al-Cu-Ni metallic glass containing oxygen, Mater. Trans. JIM 39, 623 (1998).
B.S. Murty, D.H. Ping, K. Hono and A. Inoue: Direct evidence for oxygen stabilization of icosahedral phase during crystallization of Zr65Cu27.5Al7.5 metallic glass, Appl. Phys. Lett. 76, 55 (2000).
A. Inoue, T. Zhang and T. Masumoto: 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).
B.S. Murty, D.H. Ping, K. Hono and A. Inoue: Influence of oxygen on the crystallization behavior of Zr65Cu27.5Al7.5 and Zr66.7Cu33.3 metallic glasses, Acta Mater. 48, 3985 (2000).
J. Saida, C. Li, M. Matsushita and A. Inoue: 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).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Saida, J., Kato, H. & Inoue, A. Primary precipitation of icosahedral quasicrystal with rearrangement of constitutional elements in Zr65Al7.5Cu27.5 glassy alloy with low oxygen impurity. Journal of Materials Research 20, 303–306 (2005). https://doi.org/10.1557/JMR.2005.0058
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1557/JMR.2005.0058