Solidification of spheroidal graphite cast irons. 2: Numerical simulation

Journal Article · Fri Jan 23 04:00:00 EST 1998 · Acta Materialia

DOI:https://doi.org/10.1016/S1359-6454(97)00282-6· OSTI ID:599876

Lacaze, J ^[1]; Castro, M ^[2]; Lesoult, G ^[3]

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1. Ecole Nationale Superieure de Chimie de Toulouse (France)
2. Centro de Investigacion y de Estudios Avanzados del IPN, Saltillo (Mexico)
3. Ecole des Mines, Nancy (France). Lab. de Science et Genie des Materiaux Metalliques

A model of the solidification of spheroidal graphite cast iron (SGI) has been detailed in Part 1. It was designed to allow the description of the successive steps of solidification of hypereutectic as well as hypoeutectic alloys, i.e. the pro-eutectic deposits and the eutectic reaction. In the present paper, this model is used first as a tool to analyze the main features of the solidification of SGI as experimentally established. Calculations are then described which were carried out to simulate a series of test castings from which sufficient experimental information was obtained to discuss the validity and the limits of the present modeling and simulating approach. Particular emphasis is put on the nucleation and growth of graphite nodules and on the precipitation of non-eutectic austenite during the eutectic stage.

• OSTI ID: 599876
• Journal Information: Acta Materialia, Journal Name: Acta Materialia Journal Issue: 3 Vol. 46; ISSN 1359-6454; ISSN ACMAFD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AUSTENITE
CAST IRON
COMPUTERIZED SIMULATION
DENDRITES
EUTECTICS
GRAPHITE
MATHEMATICAL MODELS
SOLIDIFICATION