Quantitative HAADF STEM study of β'-like precipitates in an Al-Mg-Ge alloy

被引：1
|
作者：
Bjorge, R. [1 ]
Dwyer, C. [1 ]
Weyland, M. [1 ]
Nakashima, P. N. H. [1 ]
Etheridge, J. [1 ]
Holmestad, R. [1 ]
机构：
[1] Norwegian Univ Sci & Technol NTNU, Dept Phys, N-7491 Trondheim, Norway
来源：
ELECTRON MICROSCOPY AND ANALYSIS GROUP CONFERENCE 2011 (EMAG 2011) | 2012年 / 371卷
基金：
澳大利亚研究理事会;
关键词：
D O I：
10.1088/1742-6596/371/1/012015
中图分类号：
TH742 [显微镜];
学科分类号：
摘要：
Precipitates in an Al-Mg-Ge alloy similar to the beta' phase in Al-Mg-Si alloys were investigated using quantitative aberration-corrected high-angle annular dark-field scanning transmission electron microscopy (HAADF STEM). Quantitative investigation into the Ge-rich columns of the precipitates found the intensity of these columns to be consistent with an Al concentration of 30 +/- 10 %, or a vacancy concentration of 20 +/- 10 %. Possible errors involved in the determination of the column composition are discussed.
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页数：4
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