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A model and experimental validation to predict heating rates for overlap between ferrite recrystallization and austenite transformation in dual phase steel manufacture

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Bandi, Bharath, van Krevel, Joost, Aslam, Numan and Srirangam, Prakash (2019) A model and experimental validation to predict heating rates for overlap between ferrite recrystallization and austenite transformation in dual phase steel manufacture. JOM, 71 (4). pp. 1386-1395. doi:10.1007/s11837-019-03358-2

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Official URL: http://dx.doi.org/10.1007/s11837-019-03358-2

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Abstract

A systematic theoretical and experimental study has been conducted to predict the heating rates required to obtain a pre-defined percentage of overlap between the ferrite recrystallization process and the austenite formation process in dual phase steel manufacture. Isothermal recrystallization kinetics for three different cold-reduced low-carbon micro-alloyed steels (50%, 60%, and 75%) with ferrite-pearlite-bainite initial microstructures was evaluated. Using various experimentally determined rate kinetic constants and critical temperatures, a continuous heating rate model which predicts the heating rate required for a predefined amount of overlap was successfully developed. The model predicted the heating rates required for a predefined 1%, 15%, 34%, 67%, 88% and 99% of overlap to be 0.2°C/s, 0.9°C/s, 1.8°C/s, 7°C/s, 50.5°C/s and 511°C/s, respectively. The experimentally determined recrystallization percentage values validated the predicted heating rates.

Item Type: Journal Article
Subjects: T Technology > TN Mining engineering. Metallurgy
T Technology > TS Manufactures
Divisions: Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH): Steel, Ferrite, Austenite
Journal or Publication Title: JOM
Publisher: Springer New York LLC
ISSN: 1047-4838
Official Date: April 2019
Dates:
DateEvent
April 2019Published
6 February 2019Available
23 January 2019Accepted
Date of first compliant deposit: 1 March 2019
Volume: 71
Number: 4
Page Range: pp. 1386-1395
DOI: 10.1007/s11837-019-03358-2
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access

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