A Model for the Calculation of the Bainitic Phase Transformation Kinetics from Dilatometric Data

A Model for the Calculation of the Bainitic Phase Transformation Kinetics from Dilatometric Data

The development of a method for determining phase transformation kinetics for a multistep solid-state transformation from a dilatation curve is described. The dilatation of steels during a continuous cooling or an isothermal holding of an austenite is analyzed. A model is proposed in which the trans...

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Veröffentlicht in:International journal of materials research 2022-01, Vol.92 (4), p.345-350
Hauptverfasser: Zhao, J.Z., Mesplont, C., De Cooman, B.C.
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Sprache:eng
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Bainitic phase transformation
Dilatometric data
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container_title International journal of materials research
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creator Zhao, J.Z.
Mesplont, C.
De Cooman, B.C.
description The development of a method for determining phase transformation kinetics for a multistep solid-state transformation from a dilatation curve is described. The dilatation of steels during a continuous cooling or an isothermal holding of an austenite is analyzed. A model is proposed in which the transient dilatation is calculated based on the fraction of the phases present. The model can be applied to calculate the phase transformation kinetics from a dilatation curve of a hypo-eutectoid steel. After verification by comparison with experimental results for an interstitial-free steel, the model is used to calculate the transformation kinetics indicated by the dilatation curves of a bainitic grade steel. Excellent agreement between the model and experiments has been obtained.
doi_str_mv 10.3139/ijmr-2001-0067
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subjects Bainitic phase transformation
Dilatometric data
title A Model for the Calculation of the Bainitic Phase Transformation Kinetics from Dilatometric Data
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