@misc{kohne_evolution_of_2023, author={Kohne, T., Fahlkrans, J., Stormvinter, A., Maawad, E., Winkelmann, A., Hedström, P., Borgenstam, A.}, title={Evolution of Martensite Tetragonality in High-Carbon Steels Revealed by In Situ High-Energy X-Ray Diffraction}, year={2023}, howpublished = {journal article}, doi = {https://doi.org/10.1007/s11661-022-06948-z}, abstract = {The martensitic transformation was studied by in situ and ex situ experiments in two high-carbon, 0.54 and 0.74 wt pct C, steels applying three different cooling rates, 15 °C/s, 5 °C/s, and 0.5 °C/s, in the temperature range around Ms, to improve the understanding of the evolution of martensite tetragonality c/a and phase fraction formed during the transformation. The combination of in situ high-energy X-ray diffraction during controlled cooling and spatially resolved tetragonality c/a determination by electron backscatter diffraction pattern matching was used to study the transformation behavior. The cooling rate and the different Ms for the steels had a clear impact on the martensitic transformation with a decrease in average tetragonality due to stronger autotempering for a decreasing cooling rate and higher Ms. A slower cooling rate also resulted in a lower fraction of martensite at room temperature, but with an increase in fraction of autotempered martensite. Additionally, a heterogeneous distribution of martensite tetragonality was observed for all cooling rates.}, note = {Online available at: \url{https://doi.org/10.1007/s11661-022-06948-z} (DOI). Kohne, T.; Fahlkrans, J.; Stormvinter, A.; Maawad, E.; Winkelmann, A.; Hedström, P.; Borgenstam, A.: Evolution of Martensite Tetragonality in High-Carbon Steels Revealed by In Situ High-Energy X-Ray Diffraction. Metallurgical and Materials Transactions A. 2023. vol. 54, 1083-1100. DOI: 10.1007/s11661-022-06948-z}}