Microstructural Characterization of Graphite Spheroids in Ductile Iron

The present work brings new insights by transmission electron microscopy allowing disregarding or supporting some of the models proposed for spheroidal growth of graphite in cast irons. Nodules consist of sectors made of graphite plates elongated along a hai direction and stack on each other with their c axis aligned with the radial direction. These plates are the elementary units for spheroidal growth and a calculation supports the idea that new units continuously nucleate at the ledge between sectors.

Mots clés

Solidification Cast iron Crystal growth Graphite Transmission electron microscopy

Domaines

Matériaux

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Theuwissen_8714.pdf (385.76 Ko)

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https://hal.science/hal-01048727

Soumis le : vendredi 25 juillet 2014-11:41:17

Dernière modification le : vendredi 17 mai 2024-16:18:03

Archivage à long terme le : mardi 25 novembre 2014-17:56:10

Dates et versions

hal-01048727 , version 1 (25-07-2014)

Identifiants

HAL Id : hal-01048727 , version 1
DOI : 10.1007/s12666-012-0162-5
OATAO : 8714

Citer

Koenraad Theuwissen, Marie-Christine Lafont, Lydia Laffont, Bernard Viguier, Jacques Lacaze. Microstructural Characterization of Graphite Spheroids in Ductile Iron. Transactions of the Indian Institute of Metals, 2012, vol. 65, pp. 627-631. ⟨10.1007/s12666-012-0162-5⟩. ⟨hal-01048727⟩

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