Microstructural changes and high temperature mechanical behavior of an andalusite based low cement refractory castable

Abstract : This paper deals with studies made in the field of the French research network PROMETHEREF. Several refractory castables are considered in this program. In the present paper, one of these materials is considered, it is a low cement castable based on andalusite aggregates. A particular attention is paid to microstructural changes during the first heating and on their effects on the high temperature mechanical behavior. Microstructural evolutions have been characterized by the way of dilatometry, scanning electron microcopy and X-ray diffraction. In-situ observations by environmental scanning electron microscopy gave complementary results on these high temperature microstructural changes. They deal with microcrack formation, phase changes, crystallization, liquid phase formation and sintering. By propagation of ultrasonic waves, high temperature continuous measurements of the Young's modulus have been made. Results confirm the. existence of microstructural changes and allow to quantify the Young's modulus variations all along specific thermal cycles. High temperature four point bending tests and room temperature tensile tests were made in the same temperature range. Behavior evolutions could be found and interpreted with the help of previously mentioned results.
Type de document :
Communication dans un congrès
Rigaud, M and Allaire, C. 4th International symposium on advances in refractories for the metallurgical industries, Aug 2004, Hamilton, Ontario, Canada. CANADIAN INST MINING, METALLURGY AND PETROLEUM, Extrait de : Advances in refractories for the metallurgical industries IV / sous la dir. de M. RIGAUD et C. ALLAIRE. - ISBN 1-894475-51-8, pp.331-345, 2004
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https://hal.archives-ouvertes.fr/hal-01714938
Contributeur : Mines Albi Ecole Nationale Supérieure Des Mines d'Albi-Carmaux <>
Soumis le : jeudi 22 février 2018 - 09:08:36
Dernière modification le : vendredi 20 juillet 2018 - 10:46:52

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  • HAL Id : hal-01714938, version 1

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H Marzagui, Thierry Cutard, Ey Fogaing, M Huger, C Gault, et al.. Microstructural changes and high temperature mechanical behavior of an andalusite based low cement refractory castable. Rigaud, M and Allaire, C. 4th International symposium on advances in refractories for the metallurgical industries, Aug 2004, Hamilton, Ontario, Canada. CANADIAN INST MINING, METALLURGY AND PETROLEUM, Extrait de : Advances in refractories for the metallurgical industries IV / sous la dir. de M. RIGAUD et C. ALLAIRE. - ISBN 1-894475-51-8, pp.331-345, 2004. 〈hal-01714938〉

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