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A 2-D nucleation-growth model of spheroidal graphite

Lacaze, Jacques and Bourdie, Jacques and Castro-Román, Manuel Jesus A 2-D nucleation-growth model of spheroidal graphite. (2017) Acta Materialia, 134. 230-235. ISSN 1359-6454

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Official URL: http://dx.doi.org/10.1016/j.actamat.2017.05.032

Abstract

Analysis of recent experimental investigations, in particular by transmission electron microscopy, suggests spheroidal graphite grows by 2-D nucleation of new graphite layers at the outer surface of the nodules. These layers spread over the surface along the prismatic direction of graphite which is the energetically preferred growth direction of graphite when the apparent growth direction of the nodules is along the basal direction of graphite. 2-D nucleation-growth models first developed for precipitation of pure substances are then adapted to graphite growth from the liquid in spheroidal graphite cast irons. Lateral extension of the new graphite layers is controlled by carbon diffusion in the liquid. This allows describing quantitatively previous experimental results giving strong support to this approach.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The original PDF of the article can be found at http://www.sciencedirect.com/science/article/pii/S1359645417304196
HAL Id:hal-01580469
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Saint-Gobain (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional - CINVESTAV-IPN (MEXICO)
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Deposited By: cirimat webmestre
Deposited On:01 Sep 2017 13:16

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