TY - JOUR
T1 - Phase transformations and microstructure evolutions during depressurization of hydrogenated Fe–Mn–Si–Cr alloy
AU - Varanasi, Rama Srinivas
AU - Koyama, Motomichi
AU - Saitoh, Hiroyuki
AU - Utsumi, Reina
AU - Sato, Toyoto
AU - Orimo, Shin ichi
AU - Akiyama, Eiji
N1 - Publisher Copyright:
© 2022 Hydrogen Energy Publications LLC
PY - 2023/3/29
Y1 - 2023/3/29
N2 - Hydride formation and associated phase transformations have been extensively studied in pure Fe. However, the understanding of hydrogenation in Fe-based alloy systems is still lacking. Such an investigation is particularly important in the case of austenitic (face-centered cubic) steels given that hydrogen has been reported to alter the austenite phase stability. In the current work, we investigate the phase transformations associated with depressurization of non-hydrogenated and hydrogenated Fe–Mn–Si–Cr alloy (FMS) (Fe-28.84Mn-7.04Cr-6.14Si, in mass %) using in-situ x-ray diffraction technique. Additionally, we study the change in microstructure using electron backscatter diffraction (EBSD) and electron channeling contrast imagining (ECCI).
AB - Hydride formation and associated phase transformations have been extensively studied in pure Fe. However, the understanding of hydrogenation in Fe-based alloy systems is still lacking. Such an investigation is particularly important in the case of austenitic (face-centered cubic) steels given that hydrogen has been reported to alter the austenite phase stability. In the current work, we investigate the phase transformations associated with depressurization of non-hydrogenated and hydrogenated Fe–Mn–Si–Cr alloy (FMS) (Fe-28.84Mn-7.04Cr-6.14Si, in mass %) using in-situ x-ray diffraction technique. Additionally, we study the change in microstructure using electron backscatter diffraction (EBSD) and electron channeling contrast imagining (ECCI).
KW - Epsilon martensite
KW - High pressure
KW - Hydride
KW - Phase transformation
KW - Synchrotron radiation X-ray diffraction
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U2 - 10.1016/j.ijhydene.2022.11.274
DO - 10.1016/j.ijhydene.2022.11.274
M3 - Article
AN - SCOPUS:85146936033
SN - 0360-3199
VL - 48
SP - 10081
EP - 10088
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 27
ER -