@misc{lin_insitu_highenergy_2021, 
author={Lin, S., Borggren, U., Stark, A., Borgenstam, A., Mu, W., Hedström, P.},
title={In-situ high-energy X-ray diffraction study of austenite decomposition during rapid cooling and isothermal holding in two HSLA steels},
year={2021},
howpublished = {journal article},
doi = {https://doi.org/10.1007/s11661-021-06192-x},
abstract = {In-situ high-energy X-ray diffraction experiments with high temporal resolution during rapid cooling (280 °C s−1) and isothermal heat treatments (at 450 °C, 500 °C, and 550 °C for 30 minutes) were performed to study austenite decomposition in two commercial high-strength low-alloy steels. The rapid phase transformations occurring in these types of steels are investigated for the first time in-situ, aiding a detailed analysis of the austenite decomposition kinetics. For the low hardenability steel with main composition Fe-0.08C-1.7Mn-0.403Si-0.303Cr in weight percent, austenite decomposition to polygonal ferrite and bainite occurs already during the initial cooling. However, for the high hardenability steel with main composition Fe-0.08C-1.79Mn-0.182Si-0.757Cr-0.094Mo in weight percent, the austenite decomposition kinetics is retarded, chiefly by the Mo addition, and therefore mainly bainitic transformation occurs during isothermal holding; the bainitic transformation rate at the isothermal holding is clearly enhanced by lowered temperature from 550 °C to 500 °C and 450 °C. During prolonged isothermal holding, carbide formation leads to decreased austenite carbon content and promotes continued bainitic ferrite formation. Moreover, at prolonged isothermal holding at higher temperatures some degenerate pearlite form.},
note = {Online available at: \url{https://doi.org/10.1007/s11661-021-06192-x} (DOI). Lin, S.; Borggren, U.; Stark, A.; Borgenstam, A.; Mu, W.; Hedström, P.: In-situ high-energy X-ray diffraction study of austenite decomposition during rapid cooling and isothermal holding in two HSLA steels. Metallurgical and Materials Transactions A. 2021. vol. 52, no. 5, 1812-1825. DOI: 10.1007/s11661-021-06192-x}}