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Structural investigation of precipitates with Cu and Zn atomic columns in Al-Mg-Si alloys by aberration-corrected HAADF-STEM

Abstract

Precipitates in Al-Mg-Si alloys with Cu addition (~0.1 wt%) and Zn addition (~1 wt%) were investigated by aberration corrected high angle annular dark field scanning transmission electron microscopy (HAADF-STEM). Most precipitates had no overall unit cell but contained ordered network of Si atomic columns for both the Cu and the Zn containing precipitates. It was found that both Cu and Zn atomic columns are located at specific sites and producing characteristic local configurations on the Si atomic columns.

Category

Academic article

Client

  • Research Council of Norway (RCN) / 193619
  • NORTEM / 197405

Language

English

Author(s)

Affiliation

  • Norwegian University of Science and Technology
  • SINTEF Industry / Materials and Nanotechnology
  • University of Rouen Normandy

Year

2014

Published in

Journal of Physics: Conference Series (JPCS)

ISSN

1742-6588

Publisher

IOP Publishing

Volume

522

Issue

1

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