Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-29T07:16:33.055Z Has data issue: false hasContentIssue false
  • English
  • Français

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 GrenobleDépartement de Métallurgie de Grenoble 85 X, 38041 GRENOBLE CEDEX, FRANCE.
Joseph Pélissier
Affiliation:
Centre d'Etudes Nucléaires de GrenobleDépartement de Métallurgie de Grenoble 85 X, 38041 GRENOBLE CEDEX, FRANCE.
Get access

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.

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

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) HUNT, J.D. and Jackson, K.A. Binary eutectic solidification Trans. Met. Soc. AIME 236 (1966) 843–852.Google Scholar
(2) Daigne, B. et Girard, F. Microanalyse à chaud d'échantillons solides ou liquides. Mém. Sci. Rev. Métallurgie 70 (1973) 325, 339.Google Scholar
(3) Glicksman, M.E. and Vold, C.L. Observation of solidification and melting phenomena in metals using the electron microscope. Acta. Met. 15 (1967) 1409–1412.Google Scholar
(4) Lemaignan, C., Camel, D. and Pélissier, J.. In situ electron microscopy of some solidification processes in metallic alloys. J. Crystal Growth 52 (1981) 67–75.Google Scholar
(5) Pélissier, J., Escaron, J. and Robin, C.. Obtension d'images d'évolution structurales rapides en expérimentation in situ dans un microscope électronique à haute tension. J. Microsc. Spectrosc. Electron 6 (1981) 251–256.Google Scholar
(6) Lemaignan, C. Etude de la solidification orientée des eutectiques au microscopeélectronique de 1 MeV. Ann. Chim. Fr. 5 (1980) 261–267.Google Scholar
(7) Hamar, R. and Lemaignan, C. Facetting behaviour of Al2Cu during solidification. J. Crystal Growth 53 (1981) 586–590.Google Scholar
(8) Cline, H.E. Stability of lamellar eutectic J. Appl. Phys. 50 (1979) 4780–4785.Google Scholar
(9) Langer, J.S. Eutectic solidification and Marginal stability. Phys. Rev. Letters 44 (1980) 1023–1026.CrossRefGoogle Scholar
(10) Lemaignan, C. Initial stages of eutectic solidification. Acta Met. 29 (1981) 1379–1384.Google Scholar
(11) Kurz, W. and Sahm, P.R. Gerichtel erstante eutektische Werkstoffe Springer Verlag Berlin (1975).Google Scholar
(12) Tiller, W.A. Liquid Metals and solidification ASM, Metals Park, OHIO (1958).Google Scholar
(13) Chadwick, G.A. Eutectic alloys solidification Prog. Mater. Sci. 12 (1963) 97–182.Google Scholar
(14) Langer, J.S. and Müller-Krumbler, H. Theory of dendritic growth Acta. Met. 26 (1978) 1681–1687.Google Scholar