Hostname: page-component-76fb5796d-qxdb6 Total loading time: 0 Render date: 2024-04-25T23:48:47.634Z Has data issue: false hasContentIssue false
  • English
  • Français

Enthalpy Relaxation Kinetics of the Zr58.5Cu15.6Ni12.8Al10.3Nb2.8 Supercooled Liquid Close to the Glass Transition

Published online by Cambridge University Press:  01 February 2011

Minalben B. Shah  and
Ralf Busch
Minalben B. Shah
Affiliation:
Department of Mechanical Engineering, Oregon State University, Corvallis, OR 97331, U.S.A.
Ralf Busch
Affiliation:
Department of Mechanical Engineering, Oregon State University, Corvallis, OR 97331, U.S.A.
Get access

Abstract

Isothermal relaxation studies of the Zr58.5Cu15.6Ni12.8Al10.3Nb2.8 bulk metallic glass forming alloy were performed using Differential Scanning Calorimetry in the glass transition and the supercooled liquid region. A new experimental method was developed to study the isothermal enthalpy relaxation kinetics. The results reveal that the enthalpy relaxes in an Arrhenius fashion. The activation energy obtained from the Arrhenius fit is comparable to the activation energy required for the diffusion of the medium size atoms. This suggests that the solid-state diffusion governs the enthalpy relaxation process. The stretching exponents for the relaxation are close to unity, which indicates that the alloy is a rather strong glass former.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 806: Symposium MM – Amorphous and Nanocrystalline Metals , 2003 , MM5.1
Copyright
Copyright © Materials Research Society 2004

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., Zhang, T. and Masumoto, T., Mater. Trans. JIM 31, 177 (1990).Google Scholar
2. Peker, A. and Johnson, W. L., Appl. Phys. Lett. 63, 2342 (1993).Google Scholar
3. Nishiyama, N. and Inoue, A., Mater. Trans. JIM 37, 1531 (1996).Google Scholar
4. Lin, X. H., Johnson, W. L., and Rhim, W. K., Mater. Trans. JIM 38, 473 (1997).Google Scholar
5. Hays, C. C., Schroers, J., Geyer, U., Bossuyt, S., Stein, N. and Johnson, W.L., Materials Science Forum 343–346, 103 (2000).Google Scholar
6. Phillips, J. C., Reports on Progress in Physics 59, 1133 (1996).Google Scholar
7. Busch, R., Bakke, E. and Johnson, W. L., Acta Materialia 46, 4725 (1998).Google Scholar
8. Shah, Minalben, Isabella Gallino and Ralf Busch, submitted to Journal of Applied Physics.Google Scholar
9. Suh, Daewoong and Dauskardt, Reinhold H., Journal of Materials Research 17, 1254 (2002).Google Scholar
10. Masuhr, A., Waniuk, T. A., Busch, R., and Johnson, W. L., Physical Review Letters 82, 2290 (1999).Google Scholar
11. Ehmler, H., Heesemann, A., Rätzke, K., Faupel, F., Geyer, U., Physical Review Letters 80, 4919 (1998).Google Scholar