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Effect of Ce and Sb on Primary Graphite Growth in Cast Irons

Theuwissen, Koenraad and Lacaze, Jacques and Laffont-Dantras, Lydia and Zollinger, Julien and Daloz, Dominique Effect of Ce and Sb on Primary Graphite Growth in Cast Irons. (2012) Transactions of the Indian Institute of Metals, vol. 65 (n° 6). pp. 707-712. ISSN 0972-2815

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Official URL: http://dx.doi.org/10.1007/s12666-012-0203-0

Abstract

It is well-known that if certain trace elements are present in cast iron melts the morphology of the graphite precipitates can be altered. In order to understand the effect of doping elements on primary growth of graphite, pure Fe–Sb alloys were prepared by induction melting. They were then placed in graphite crucibles and heated to a temperature above the Fe–C eutectic so that the charge became saturated in carbon and melted. To obtain Fe–Ce alloys, metallic Ce was added at the bottom of a graphite crucible and covered with iron, and then heated as for the Fe–Sb charge. In both cases, the melt was then cooled and held slightly above the eutectic temperature so that primary graphite crystals, which had nucleated on the crucible walls and then detached from it, could grow freely in the melt. The influence of the added elements on graphite growth was revealed by the change in the shape and distribution of the crystals compared to those obtained in similar experiments carried out with pure Fe. The experiments were made in air and vacuum so as to point out possible interactions between the elements present in the melt and oxygen.

Item Type:Article
Additional Information:Thanks to Springer Verlag editor.The definitive version is available at http://link.springer.com The original PDF of the article can be found at Transactions of the Indian Institute of Metals website : http://dx.doi.org/10.1007/s12666-012-0203-0
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole Nationale Supérieure des Mines de Nancy - ENSMN (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Université de Lorraine (FRANCE)
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Deposited By: cirimat webmestre
Deposited On:22 May 2013 10:00

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