Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-29T07:25:15.767Z Has data issue: false hasContentIssue false
  • English
  • Français

Glassy Pd-Y-Si Alloys and Their Relaxation and Crystallization Kinetics*

Published online by Cambridge University Press:  21 February 2011

Y.Q. Gao  and
B.C. Giessen
Y.Q. Gao
Affiliation:
Barnett Institute of Chemical Analysis and Materials Science and Department of Chemistry, Northeastern University, Boston, MA 02115
B.C. Giessen
Affiliation:
Barnett Institute of Chemical Analysis and Materials Science and Department of Chemistry, Northeastern University, Boston, MA 02115
Get access

Abstract

Pd-Y-Si glasses with a Si content as low as 9 at.% were produced by hammer and anvil quenching, the reduction of the Si concentration from a minimum value of 14 at.% in binary Pd-Si alloys was due to the synergistic effect of the addition of Y. The glass forming composition region is reported.

The alloy Pd2Y,Si, was studied in detail. The change of the microhardness upon isothermal annealing was investigated. Isothermal and non-isothermal heating experiments yielded activation energies of 52 and 53 kcal/mol (218 and 222 kJ/mol) in good agreement with each other and an Avrami exponent n = 3.7 was found.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 28: Symposium F – Rapidly Solidified Metastable Materials , 1983 , 265
Copyright
Copyright © Materials Research Society 1984

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.)

Footnotes

**

Permanent Address: Institute of Precious Metals, Ministry of Metallurgical Industry, Kunming, Yunnan, China

*

Communication No. 217 from the Barnett Institute

References

REFERENCES

1. Finocchiaro, R.S., Tsai, C.L. and Giessen, B.C., J. of Non-Crystall. Sol., Vol. 61/62 (1984) 661.10.1016/0022-3093(84)90621-5Google Scholar
2. Scott, M., Rapidly Quenched Metals III Vol. 1, edited by Cantor, B. (1978) Brighton, England, 198.Google Scholar
3. Chen, H.S. and Goldstein, M., J. Appl. Phys. Vol. 43 (1972) 1642.10.1063/1.1661374Google Scholar
4. Polk, D.E. and Giessen, B.C., U.S. Patent No. 4,116,682 (1978).Google Scholar
5. Van Den Beukel, A. et al. , Acta Metall. Vol. 31 (1983) 419.10.1016/0001-6160(83)90219-5Google Scholar
6. Gao, Y.Q., Zheng, F.Q., Liu, X. and Ning, Y.T., Proc. 4th Int. Conf. RQM, Vol. 1 edited by Masumoto, T. and Suzuki, K. (1981) Sendai, Japan, 727.Google Scholar
7. Christian, W., The Theory of Transformations in Metals and Alloys, Part 1, 2nd Ed. (1981) Pergamon Press, 542.Google Scholar