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Polymorphic Crystallization of Metal-Metalloid-Glasses above the Glass Transition Temperature

Published online by Cambridge University Press:  26 February 2011

U. Köster ,
U. Schünemann ,
G.B. Stephenson ,
S. Brauer  and
M. Sutton
U. Köster
Affiliation:
Dept. Chem. Eng., University Dortmund, Dortmund, F.R.Germany
U. Schünemann
Affiliation:
Dept. Chem. Eng., University Dortmund, Dortmund, F.R.Germany
G.B. Stephenson
Affiliation:
Thomas J.Watson Research Center, IBM, Yorktown Heights, NY, USA
S. Brauer
Affiliation:
Dept. of Physics, Centre for the Physics of Materials, McGill University, Montreal, PQ, Canada
M. Sutton
Affiliation:
Dept. of Physics, Centre for the Physics of Materials, McGill University, Montreal, PQ, Canada
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Extract

Crystallization of metal-metalloid glasses is known to proceed by nucleation and growth processes. Using crystallization statistics in partially crystallized glasses, at temperatures below the glass transition temperature, time-dependent heterogeneous nucleation has been found to occur at a number of quenched-in nucleation sites [1]. Close to the glass transition temperature crystallization proceeds so rapidly that partially crystallized microstructures could not be obtained. Initial results from fully crystallized glasses exhibit evidence for a transient homogeneous nucleation process at higher temperatures [1,2].

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 205: Symposium F – Kinetics of Phase Transformations , 1990 , 233
Copyright
Copyright © Materials Research Society 1992

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References

1. Blanke, H., Köster, U., Proc. 5th International Conference on Rapidly Quenched Metals, (Wörzburg 1984), eds. Steeb, S., Warlimont, H. (North-Holland, Amsterdam 1985), p.227.Google Scholar
2. Schünemann, U., PhD-thesis, University of Dortmund, Dortmund 1989.Google Scholar
3. Sutton, M., Yang, Y.S., Mainville, J., Jordan-Sweet, J.L., Ludwig, K.F. Jr., Stephenson, G.B., Phys. Rev. Lett. 62, 288 (1989).CrossRefGoogle Scholar
4. Stephenson, G.B., Ludwig, K.F. Jr., Jordan-Sweet, J.L., Brauer, S., Mainville, J., Yang, Y.S., Sutton, M., Rev. Sci. Inst. 60, 1537 (1989).CrossRefGoogle Scholar
5. Köster, U., Schiinemann, U., “Phase Transformations in Rapidly Solidified Alloys”, in Rapidly Solidified Alloys, ed. Liebermann, H.H. (Marcel Dekker, Inc., New York), to be published.CrossRefGoogle Scholar
6. Brauer, S., Ryan, D.H., Ström-Olsen, J.O., Sutton, M., Stephenson, G.B., Rev. Sci. Inst. 61, 2214 (1990).CrossRefGoogle Scholar