期刊
MATERIALS LETTERS
卷 176, 期 -, 页码 223-227出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.04.114
关键词
Metals and alloys; Phase transformation; Microstructure; Interfaces; Electron microscopy
资金
- National Natural Science Foundation of China [51171107]
This paper reports on an atomic-scale investigation into the interactions between beta' precipitates and long-period stacking ordered phase (LPSO) in Mg-10Gd-5Y-2Zn-0.5Zr (wt%) alloy, using Cs-corrected high angle annular dark field-scanning transmission electron microscopy (HAADF-STEM). The general morphology within the alloy is LPSO phase intercalated with beta' precipitates and the two structures interconnect into a 3-D network. The beta'/LPSO interactions are fully characterized and categorized into three types: RE-absent gaps parallel to (11 (2) over bar0)(Mg), redistributions of heavy atoms within LPSO structures and interceptions of beta' precipitates by LPSO structures from [10 (1) over bar0](Mg) direction. (C) 2016 Elsevier B.V. All rights reserved.
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