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Study of the Eutectoid Transformation in Nodular Cast Irons in Relation to Solidification Microsegregation

Freulon, Alexandre and Parseval, Philippe de and Josse, Claudie and Bourdie, Jacques and Lacaze, Jacques Study of the Eutectoid Transformation in Nodular Cast Irons in Relation to Solidification Microsegregation. (2016) Metallurgical and Materials Transactions A, 47 (11). 5362-5371. ISSN 1073-5623

(Document in English)

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Official URL: http://dx.doi.org/10.1007/s11661-016-3692-3


Eutectoid transformation in cast irons may proceed in the stable or the metastable systems giving ferrite and graphite for the former and pearlite for the latter. The present work demonstrates that composition profiles across ferrite/pearlite boundaries are smooth and similar to those issued from the solidification step. No trace of long-range diffusion of substitutional solutes due to austenite decomposition could be observed. In turn, this ascertains that both stable and metastable transformations proceed with the product matrix—either ferrite opearlite—inheriting the parent austenite content in substitutional solutes. This result sustains a physical model for eutectoid transformation based on the so-called local para-equilibrium which is commonly used for describing solid-state transformation in steels.

Item Type:Article
Additional Information:Thanks to Springer editor. The definitive version is available at https://link.springer.com/ The original PDF of the article can be found at https://link.springer.com/article/10.1007%2Fs11661-016-3692-3
HAL Id:hal-01677364
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National d'Études Spatiales - CNES (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
French research institutions > Institut de Recherche pour le Développement - IRD (FRANCE)
Other partners > Saint-Gobain (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Deposited On:08 Jan 2018 10:51

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