@article{2bd7343fa5c94ee5b9037826acd3d533,
title = "Depressurization-induced diffusionless transformation in pure iron hydrogenated under several gigapascals",
abstract = "Phase transformation in hydrogenated iron during depressurization from several gigapascals was investigated through in-situ synchrotron radiation X-ray diffraction and post-mortem electron backscatter diffraction measurements. The hydrogenated iron under 8.6 GPa at 293 K showed a double hexagonal close-packed (dhcp) structure, and it gradually transformed into a body-centered cubic (bcc) structure with decreasing pressure. The final crystal structure consisted entirely of a bcc phase. The structural change from dhcp to bcc structure was diffusionless-type phase transformation. The bcc phase showed lath morphology and could grow during aging under a constant pressure of 1.9 GPa, which indicated that it was bainitic-type transformation that required hydrogen diffusion or desorption.",
keywords = "Bainitic transformation, Double hexagonal close-packed structure, High-pressure, Hydrogenation, Pure iron",
author = "Motomichi Koyama and Hiroyuki Saitoh and Toyoto Sato and Orimo, {Shin ichi} and Eiji Akiyama",
note = "Funding Information: This work was financially supported by JSPS KAKENHI Grants-in-Aid for Scientific Research on innovative areas ?Hydrogenomics?, JP20H02457, JP18H05513, and JP18H05514. The synchrotron radiation experiments were performed at QST (JAEA) beamline BL14B1, SPring-8 (2020A-H14), with the approval of JASRI (2020A3691). Funding Information: This work was financially supported by JSPS KAKENHI Grants-in-Aid for Scientific Research on innovative areas “Hydrogenomics”, JP20H02457, JP18H05513, and JP18H05514. The synchrotron radiation experiments were performed at QST (JAEA) beamline BL14B1, SPring-8 (2020A-H14), with the approval of JASRI (2020A3691). Publisher Copyright: {\textcopyright} 2021 The Author(s)",
year = "2021",
month = sep,
doi = "10.1016/j.mlblux.2021.100078",
language = "English",
volume = "11",
journal = "Materials Letters: X",
issn = "2590-1508",
publisher = "Elsevier BV",
}