| Autor: |
Yiqiang Hao, Lei Zhou, Zhiqing Chen, Zhixian Zhao, Bin Chen |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Journal of Magnesium and Alloys, Vol 12, Iss 2, Pp 506-515 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2213-9567 |
| DOI: |
10.1016/j.jma.2021.11.015 |
| Popis: |
The paper reports on the atomic investigation about β phase in Mg96Gd2Y1Ni1 alloy by using the first-principles study and the high-angle annular dark-field scanning transmission electron microscope (HAADF-STEM) corrected by atomic Cs. By using HAADF-STEM, the rectangular β phases were observed in the underage and peak aging stages in Mg96Gd2Y1Ni1 alloy. The β phase could be precipitated from the previously precipitated β phase, and the β phase grew in steps when it was precipitated. A special transition structure of three atomic layer thicknesses was first observed at the edge of the β phase and the structure of this interface is probably as the β/Mg1 interface for the analysis of thermodynamic characterization and electronic characterization. The β' phase and the βH structure were precipitated only at the edge of the length directions of the β phase. The β' phase continues to grow into a β phase directly without the formation of β1 phase, resulting in an increase in the length of the β phase, which is discovered for the first time. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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