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In Situ Electron Microscopy : Solidification of Eutectic Alloys.

Published online by Cambridge University Press:  15 February 2011

Clément Lemaignan and
Joseph Pélissier
Clément Lemaignan
Affiliation:
Centre d'Etudes Nucléaires de Grenoble Département de Métallurgie de Grenoble 85 X, 38041 GRENOBLE CEDEX, FRANCE.
Joseph Pélissier
Affiliation:
Centre d'Etudes Nucléaires de Grenoble Département de Métallurgie de Grenoble 85 X, 38041 GRENOBLE CEDEX, FRANCE.
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Abstract

A heating stage and an advanced video recording system were used in the 1 MeV electron microscope of CEN Grenoble. This allowed us to observe various aspects of eutectic solidification. These observations include regular lamellar solidification with faceted or non faceted solid-liquid interfaces, change of lamellar spacing with solidification rate, non reciprocal heterogeneous nucleation of eutectic solidification.

We discuss them with respect to the classical theories and introduce a new eutectic nucleation mechanism based on surface dendrites.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 12: Symposium L – In Situ Composites IV , 1981, 241
Copyright
Copyright © Materials Research Society 1982

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References

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