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Published in: Metallurgical and Materials Transactions A 1/2018

22-11-2017

Bainite Transformation During Continuous Cooling: Analysis of Dilatation Data

Authors: Ravi Ranjan, Shiv Brat Singh

Published in: Metallurgical and Materials Transactions A | Issue 1/2018

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Abstract

A new approach based on iteration is presented to extract the amount and composition of bainitic ferrite and austenite from the dilatation curve. The carbon concentration of bainitic ferrite estimated from the dilatation curve was found to be higher than the solubility of carbon in α-ferrite that is in paraequilibrium with γ-austenite, and it agreed well with the corresponding value estimated from X-ray diffraction (XRD). A slightly better fit between the experimental and calculated dilatation curves was obtained with body-centered-tetragonal than with body-centered-cubic (bcc) bainitic ferrite. These results suggest that the austenite to bainitic ferrite transformation occurs through a displacive mechanism.

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Metadata
Title
Bainite Transformation During Continuous Cooling: Analysis of Dilatation Data
Authors
Ravi Ranjan
Shiv Brat Singh
Publication date
22-11-2017
Publisher
Springer US
Published in
Metallurgical and Materials Transactions A / Issue 1/2018
Print ISSN: 1073-5623
Electronic ISSN: 1543-1940
DOI
https://doi.org/10.1007/s11661-017-4419-9

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