@inproceedings{e9ca72c228ea44919c1ec57078a8870b,
title = "In situ characterisation of austenite/ferrite transformation kinetics and modelling of interphase precipitation inter-sheet spacing in V microalloyed HSLA steels",
abstract = "A new generation of low-carbon microalloyed High Strength Low Alloy (HSLA) steels has been developed to utilize a combination of single-phase ferritic microstructures and optimized interphase precipitation to provide high level strength and exceptional formability. The interphase precipitation reaction is a transient process lending itself strongly to take advantage of in-situ characterization techniques. The austenite/ferrite interface kinetics during isothermal transformation at 1003 K is measured using HT-CSLM, the pre-exponential effective mobility constant was found to be mobility 0.822 (m J)/(mole s). The V interphase precipitation is characterised using TEM at isothermal transformation temperatures of 923 and 973 K as having inter-sheet spacing of 22±7 and 32±9 nm respectively. Interphase precipitation inter-sheet-spacing is simulated using a revised Quasi-Ledge model and qualitatively predicts the observed trends observed for inter-sheet spacing. The results of in-situ characterisation and modelling suggest that it is possible to optimize the strengthening potential of the precipitation processes by controlling the thermal processing of microalloyed HSLA.",
keywords = "HSLA, In Situ-HT-CLSM, Interphase precipitation, Quasi-ledge model",
author = "Samuel Clark and Yongjun Lan and Vit Janik and Arjan Rijkenberg and Seetharaman Sridhar",
note = "Publisher Copyright: {\textcopyright} 2017 Trans Tech Publications, Switzerland.; 9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016 ; Conference date: 29-05-2016 Through 03-06-2016",
year = "2017",
doi = "10.4028/www.scientific.net/MSF.879.356",
language = "English (US)",
isbn = "9783035711295",
series = "Materials Science Forum",
publisher = "Trans Tech Publications Ltd",
pages = "356--362",
editor = "Christof Sommitsch and Mihail Ionescu and Brajendra Mishra and Brajendra Mishra and Ernst Kozeschnik and T. Chandra",
booktitle = "THERMEC 2016",
}