Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-20T09:33:06.644Z Has data issue: false hasContentIssue false
  • English
  • Français

Surface Energy Driven Crystallization of Amorphous Ni69Cr14P17 Alloy

Published online by Cambridge University Press:  21 February 2011

G. Schumacher ,
N. Wanderka  and
R. P. Wahi
G. Schumacher
Affiliation:
Argonne National Laboratory, Materials Science Division, 9700 South Cass Avenue, Argonne, IL 60439
N. Wanderka
Affiliation:
Hahn-Meitner-Institut Berlin, Glienicker Strasse 100, D-14109 Berlin, Germany
R. P. Wahi
Affiliation:
Argonne National Laboratory, Materials Science Division, 9700 South Cass Avenue, Argonne, IL 60439
Get access

Abstract

Amorphous Ni69Cr14P17 specimens thinned for transmission electron microscopy have been studied in situ during thermal treatment. In the thinnest regions of the specimens (thickness d < 50 nm), a metastable hexagonal (Ni,Cr)3P phase nucleates at the perforation edge with the c-axis perpendicular to the specimen surface. The crystal width of this phase grows linearly with time. Above 530°C the hexagonal phase transforms into a stable b.c.t. (Ni,Cr)3P phase. It is concluded that the surface and grain boundary energies dominate nucleation and growth.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 355: Symposium B1 – Evolution of Thin-Film and Surface Structure and Morphology , 1994 , 3
Copyright
Copyright © Materials Research Society 1995

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. Schumacher, G., Wanderka, N., Wahi, R.P. and Wollenberger, H., J. Nucl. Mater. 191–194, 478 (1992).Google Scholar
2. Schumacher, G., Wahi, R.P. and Wollenberger, H., J. Nucl. Mater. 212–215, 1594 (1994).Google Scholar
3. Park, S.H. and Lee, D.N., J. Mater. Sci. 23, 1636 (1988).Google Scholar
4. Agarwala, R.C. and Ray, S., Z. Metallkunde 83, 1999 (1992).Google Scholar
5. Schumacher, G. and Wahi, R.P., Scripta Metall. Mater. 31 (1994).Google Scholar
6. Baer, D.R., Pederson, L.R. and Thomas, M.T., Mater. Sci. Eng. 48, 283 (1981).Google Scholar