Deformation-induced martensitic transformation at tensile and compressive deformations of bainitic steels with different carbon contents
نویسندگان
چکیده
Deformation-induced martensitic transformation (DIMT) during tensile or compressive deformations of the bainitic steels with various carbon content (0.15 %C, 0.25 0.62 %C) was studied. The initial microstructure before deformation tests prepared by austempering at 400 °C to obtain structure consisting ferrite and retained austenite. volume fraction austenite larger in steel content. In all steels, exhibited work hardening than compression. This difference indicates suppression DIMT compression, actually measurements electron back scattering diffraction (EBSD) confirmed less reduction compression steels. Additionally, highest examined situ neutron clarified similar that obtained EBSD measurement. regression relation between applied strain conventional empirical equation revealed kinetic is strongly dependent stress polarity, but not significantly changed mechanism dependence polarity discussed texture crystallographic orientation DIMT.
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ژورنال
عنوان ژورنال: Isij International
سال: 2023
ISSN: ['0915-1559', '1347-5460']
DOI: https://doi.org/10.2355/isijinternational.isijint-2023-253