https://doi.org/10.1140/epjs/s11734-025-01490-6
Regular Article
Calculation of low-temperature stacking-fault energy and microstructural evolution of high-manganese steels
1
CAS Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, 100190, Beijing, China
2
Centre of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049, Beijing, China
3
Shougang Research Institute of Technology, Shougang Group, 100043, Beijing, China
Received:
14
August
2024
Accepted:
26
January
2025
Published online:
3
February
2025
This research investigates low-temperature high-manganese steels, assessing their mechanical properties at low temperatures. The material demonstrates an excellent combination of strength and ductility, making it suitable for low-temperature structural applications, such as the superconducting toroidal field (TF) coil structure material. Thermodynamic modeling has been employed to calculate the stacking-fault energy, allowing us to deduce the plastic deformation mechanisms at different tensile temperatures. Transmission electron microscopy confirms that the predominant deformation mechanism at room temperature is dislocation slip, while it transitions to twinning at low temperatures.
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© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.