Structure determination and structure refinement of Al2CuMg precipitates by quantitative high-resolution electron microscopy

被引：51

作者：

Kilaas, R

Radmilovic, V

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94270 USA

[2] Univ Belgrade, Dept Met Phys, Belgrade, Yugoslavia

来源：

ULTRAMICROSCOPY | 2001年 / 88卷 / 01期

关键词：

quantitative high-resolution electron microscopy; structure refinement; image comparison; S-phase; Al-Cu-Mg alloy;

D O I：

10.1016/S0304-3991(00)00107-8

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

The structure of the S-phase (Al2CuMg) precipitate in an Al matrix has been determined by using a combination of image processing, quantitative image comparison, and automatic refinement of imaging and structural parameters. A method for comparing images with unknown origin relationship while quickly estimating a possible translation of the origin is outlined. The optimization algorithm used in the structure determination utilizes space group symmetry, which is deduced from the crystal-zone axis and reduces the number of free parameters. Published by Elsevier Science B.V.

引用

页码：63 / 72

页数：10

共 20 条

[1]

The crystal structure of the β" phase in Al-Mg-Si alloys [J].