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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