Imperial College London
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DrNanLi

Faculty of Engineering, Dyson School of Design Engineering

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 8853n.li09 Website

 
 
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Location

 

1M03Royal College of ScienceSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Li:2016:10.1016/j.jmatprotec.2016.06.006,
author = {Li, N and Lin, J and Balint, DS and Dean, TA},
doi = {10.1016/j.jmatprotec.2016.06.006},
journal = {Journal of Materials Processing Technology},
pages = {394--401},
title = {Modelling of austenite formation during heating in boron steel hot stamping processes},
url = {http://dx.doi.org/10.1016/j.jmatprotec.2016.06.006},
volume = {237},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A physically-based material model has been developed to describe the austenite formation in a manganese-boron steel during heating in hot stamping processes. The equations were formulated based on three austenite formation mechanisms: nucleation, growth and impingement. It is able to characterise the phase transformation process under both non-isothermal and isothermal conditions, where the effects of heating rate and soaking temperature on the austenite formation have been rationalised. Heat treatment tests of the manganese-boron steel were performed on a Gleeble 3800 subjected to various heating conditions (heating rate: 1 K/s − 25 K/s, soaking temperature: 1023 K − 1273 K). The dimensional changes of specimens associated with the phase transformation, which was measured using a high resolution dilatometer, has been quantitatively related to the volume fraction of austenite formation. The experimental data was used to calibrate and validate the equations. Good agreement between the experimental and predicted results has been obtained. Further analysis has been made to illustrate the significance of the model in applications.
AU  - Li,N
AU  - Lin,J
AU  - Balint,DS
AU  - Dean,TA
DO  - 10.1016/j.jmatprotec.2016.06.006
EP  - 401
PY  - 2016///
SN  - 0924-0136
SP  - 394
TI  - Modelling of austenite formation during heating in boron steel hot stamping processes
T2  - Journal of Materials Processing Technology
UR  - http://dx.doi.org/10.1016/j.jmatprotec.2016.06.006
UR  - http://hdl.handle.net/10044/1/33874
VL  - 237
ER  -
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