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

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

Category
Academic article
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.
Client
  • NORTEM / 197405
  • Research Council of Norway (RCN) / 231762
  • Research Council of Norway (RCN) / 269905
  • Research Council of Norway (RCN) / 237885
Language
English
Author(s)
Affiliation
  • Norwegian University of Science and Technology
  • SINTEF Industry / Materials and Nanotechnology