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Detailed investigation of the shearing mechanism of β" precipitates in Al-Mg-Si alloys

Abstract

The mechanism behind shearing of β'' precipitates in Al-Mg-Si alloys during deformation is investigated by applying advanced transmission electron microscopy (TEM) techniques and frozen phonon multislice TEM image simulations on a selection of shearing configurations. In particular, the results indicate that the needle-like precipitates are sheared several times in single matrix Burgers vector steps. The multislice image simulations suggest that shearing events are most likely achieved in single Burgers vector steps, and there are some experimental evidence that the shearing planes are the matrix glide planes.

Category

Academic article

Client

  • NORTEM / 197405
  • Research Council of Norway (RCN) / 231762
  • Research Council of Norway (RCN) / 269905
  • Notur/NorStore / nn9158k
  • Research Council of Norway (RCN) / 237885

Language

English

Author(s)

Affiliation

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

Year

2020

Published in

MATEC Web of Conferences

ISSN

2261-236X

Volume

326

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