Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-20T07:01:05.043Z Has data issue: false hasContentIssue false
  • English
  • Français

Crystallization in Zr-Cu-Ni-Al Metallic Glasses

Published online by Cambridge University Press:  17 March 2011

U. Köster ,
D. Zander  and
R. Janlewing
U. Köster
Affiliation:
Dept. Chem. Eng., University of Dortmund, D-44221 Dortmund, Germany
D. Zander
Affiliation:
Dept. Chem. Eng., University of Dortmund, D-44221 Dortmund, Germany
R. Janlewing
Affiliation:
Dept. Chem. Eng., University of Dortmund, D-44221 Dortmund, Germany
Get access

Abstract

Zr-Cu-Ni-Al exhibits one of the best glass forming alloys known. In a narrow concentration range, however, annealing leads to the formation of a metastable icosahedral phase. The aim of this paper is to investigate in detail the influence of alloying with Hf or Si, Sn, Y, Cr and Mo on the quasicrystal formation in Zr69.5Cu12Ni11Al7.5 glasses.

Whereas Y addition leads to loss in thermal stability and pronounced formation of quasicrystals, the addition of Si, Sn or Mo does not deteriorate thermal stability. Sn and Si were observed even to improve thermal stability significantly, but also to change phase selection during the early stages of crystallization. Si addition results in the formation of the tetragonal Zr2Ni phase and Mo as well as Cr to the formation of the fcc, so-called big-cube phase.

Nucleation rates for the quasicrystal formation were measured by means of crystallization statistics. By modeling the obtained nucleation rates in the framework of diffusion controlled classical nucleation the interface energies (between quasicrystals and amorphous matrix) as well as metastable melting temperatures for the quasicrystalline phase could be derived. In all cases nucleation could be described best with a homogeneous model with transient rates.

In order to understand the formation of the icosahedral structure also data on the influence of oxygen and hydrogen contamination as well as recent results of other authors on the influence of noble metals such as Ag, Pd, Au and Pt will be discussed in detail. There is some evidence that the quasicrystals are a hybrid of two structural elements, i.e. the tetragonal Zr2Ni (Al2Cu) and the tetragonal Zr2Cu (MoSi2) structure. It is further assumed that an icosahedral short-range order of the melt is stabilized by the addition of elements like Hf, probably Y or by contamination with very small amounts of oxygen, thus leading to a reduced interfacial energy between the quasicrystals and the amorphous matrix and therefore to a lower nucleation barrier.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 644: Symposium L – Supercooled Liquid, Bulk Glassy and Nanocrystalline State of Alloys , 2000 , L5.8
Copyright
Copyright © Materials Research Society 2001

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] Peker, A., Johnson, W.L., Mater.Sci.Eng. A179 (1994), 173;Google Scholar
[2] Inoue, A., Zhang, T., Nishiyama, N., Ohba, K., Masumoto, T., Mater.Trans., JIM 34 (1993), 1234;Google Scholar
[3] e.g., Inoue, A., Acta Mater. 48 (2000), 279;Google Scholar
[4] Köster, U., Meinhardt, J., Roos, S., Rüdiger, A., Mat.Sci.Forum 225–227 (1996), 311;Google Scholar
[5] Köster, U., Zander, D., Meinhardt, J., Eliaz, N., Eliezer, D.: Proc. ICQ6 Tokyo 1997, eds. Takeuchi, S., Fujiwara, T., World Scientific Publ., Singapore 1998, p.313ff.;Google Scholar
[6] e.g., Inoue, A., Zhang, T., Saida, J., Matsushita, M., Chen, M.W., Sakurai, T., Mater.Trans., JIM 40 (1999), 1137;Google Scholar
[7] Zander, D., Janlewing, R., Rüdiger, A., Köster, U., Mater.Sci.Forum 307 (1999), 25;Google Scholar
[8] Köster, U., Meinhardt, J., Roos, S., Liebertz, H., Appl.Phys.Lett. 69 (1996), 179;Google Scholar
[9] Köster, U., Alves, H., Meinhardt, J., Nanocrystalline Materials by Crystallization of Metallic Glasses, in: Proc. IUMRS (Tokyo 1993): Advanced Materials '93, Trans.Mat.Res.Soc. Japan Vol. 16A (1994), p.69ff.;Google Scholar
[10] Köster, U., Rüdiger, A., Meinhardt, J., Proc. 6th Int. Conf. Quasicrystals, Tokyo 1997, eds. Takeuchi, S., Fujiwara, T., World Scientific Publ. Co., Singapore 1998, p.317ff.;Google Scholar
[11] Eckert, J., Mattern, N., Zinkevitch, M., Seidel, M., Mater.Trans., JIM 39 (1998), 623;Google Scholar
[12] Zander, D., Köster, U., Eliaz, N., Eliezer, D., Plachke, D., Mater.Res.Soc.Symp.Proc.: Vol. 553, eds. Dubois, J.M., Thiel, P.A., Tsai, A.P., Urban, K., MRS 1999, p.49ff.;Google Scholar
[13] Saida, J., Matsushita, M., Zhang, T., Inoue, A., Cheng, M.W., Sakurai, T., Appl.Phys.Lett. 75 (1999), 3497;Google Scholar
[14] Lee, J.K., Choi, G., Kim, D.H., Kim, W.T., Appl.Phys.Lett. 77 (2000), 978;Google Scholar
[15] Saida, J., Matsushita, M., Inoue, A., Proc. ISMANAM-2000, Oxford 2000, in press;Google Scholar
[16] Inoue, A., Zhang, T., Saida, J., Matsushita, M., Chen, M.W., Sakurai, T., Mater.Trans., JIM 40 (1999), 1181;Google Scholar
[17] Ping, D.H., Hono, K., Inoue, A., Mater.Sci.Forum 307 (1999), 31;Google Scholar
[18] Zander, D., Köster, U., Proc. RQ10, Bangalore 1999, Mater.Sci.Eng. (2000), in press;Google Scholar
[19] Köster, U., Janlewing, R., Zander, D., Influence of Alloying on the Formation of Quasicrystals in Zr-Cu-Ni-Al Metallic Glasses, Proc. Int. Symp. Amorphous and Nanocrystalline Materials, Akiu Spring (Japan) 2000, in press;Google Scholar
[20] Saida, J., Matsushita, M., Li, C., Inoue, A., Appl.Phys.Lett. 76 (2000), 3558;Google Scholar
[21] Ranganathan, S., Inoue, A., Glass Forming Ability and Quasicrystal Forming Ability: A Comparative Study in Zirconium Base Alloys, Proc. QUASICRYSTALS 2000, Banaras Hindu University, Varanasi (India) 2000, in press.Google Scholar