2021年9月
Depressurization-induced diffusionless transformation in pure iron hydrogenated under several gigapascals
Materials Letters: X
- ,
- ,
- ,
- ,
- 巻
- 11
- 号
- 開始ページ
- 100078
- 終了ページ
- 100078
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.mlblux.2021.100078
- 出版者・発行元
- Elsevier BV
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. (C) 2021 The Author(s). Published by Elsevier B.V.
- リンク情報
- ID情報
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- DOI : 10.1016/j.mlblux.2021.100078
- ISSN : 2590-1508
- Web of Science ID : WOS:000700353500003