1. Preliminary reminders
The heat treatments and terminology used for cast irons are similar to those used for steels, but with some particularities: the notion of "hardenability" used for steel metallurgy can be transposed to cast irons, but the high carbon and silicon contents, combined with an appreciable manganese content, give cast irons a relatively high hardenability, so that oil quenching can be substituted for water quenching.
It is essential to note that the carbon content of the austenite before hardening is a function of the austenitizing temperature and, therefore, hardenability will depend not only on the chemical composition of the matrix, but also on the austenitizing conditions.
The presence of silicon leads to the formation of a critical temperature interval during the γ → α transformation, an interval that widens and moves to higher values as...
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Preliminary reminders
Heat treatment
Bibliography
References
Standardization
- Foundry – Cast iron with lamellar graphite (classification index: A32-101) - NF EN 1561 - 10-1997
- Foundry – Malleable cast iron (classification index: A32-701) - NF EN 1562 - 10-1997
- Foundry – Malleable cast iron (classification index: A32-701/A1) - NF EN 1562/A1 - 9-2006
- Foundry – Spheroidal graphite cast iron (2nd edition, March 1998) (classification index: A32-201) - NF EN 1563 - 10-1997
- Foundry...
Theses
http://www.sudoc.abes.fr
ADRIEN (J.). – Optimization of thermal cycles applied to ferritic GS cast irons with respect to fatigue properties. INSA de Lyon (2004).
SERBAN (F.). – Evaluation and modeling of residual stresses in austenoferritic spheroidal graphite cast irons: influence of thermal and thermomechanical treatment. University of Reims, Champagne-Ardenne (2004).
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