Gong, P., Palmiere, E.J. orcid.org/0000-0002-4048-8536 and Rainforth, W.M. orcid.org/0000-0003-3898-0318 (2017) Characterisation of strain-induced precipitation behaviour in microalloyed steels during thermomechanical controlled processing. Materials Characterization, 124. pp. 83-89. ISSN 1044-5803
Abstract
The temperature at which thermomechanical controlled processing is undertaken strongly influences strain-induced precipitation (SIP) in microalloyed steels. In this study, the recrystallisation-precipitation-time-temperature curve was simulated to determine the full recrystallisation temperature, recrystallisation-stop temperature and the temperature where precipitation would occur at the shortest time. The calculated temperatures were verified by experimental testing for rolling between 1100 °C and 850 °C. On the basis of this a finishing deformation of 850 °C was chosen in order to maximise the precipitate number density formed in a fully unrecrystallised austenite. The orientation relationship between the SIP in austenite, and subsequent transformation to ferrite was identified by calculation from the coordinate transformation matrix, and by electron diffraction in the transmission electron microscope. The NbC formed as coherent/semi-coherent precipitates in the austenite, and remained coherent/semi-coherent in the ferrite, indicating a Kurdjumov-Sachs orientation relationship between the austenite and ferrite on transformation.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2016 Elsevier. This is an author produced version of a paper subsequently published in Materials Characterization. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
Keywords: | Microalloyed steel; Recrystallisation-precipitation-time-temperature curve; Strain-induced precipitates; Orientation relationship |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 07 Aug 2017 08:33 |
Last Modified: | 16 Dec 2017 01:38 |
Published Version: | https://doi.org/10.1016/j.matchar.2016.12.009 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.matchar.2016.12.009 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:119770 |
Download
Filename: Characterisation of strain-induced precipitation (09-12-2016).pdf
Licence: CC-BY-NC-ND 4.0