Spatial fluctuations of the microstructure during deformation of Cu single crystals

M. Kerber, E. Schafler, P. Hanak, G. Ribàrik, S. Bernstorff, T. Ungàr, M. Zehetbauer

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Using X-ray Bragg Peak profile analysis (XPA) together with the very high intensity of synchrotron radiation, it was possible to study the evolution of several microstructural quantities, such as the density of dislocations p and their arrangement M with high lateral resolution during deformation. Observing copper single crystals during compression a discontinuous behaviour of the dislocation density was observed in spatial scans. This can be interpreted as a consequence of the propagation of deformation waves in contrast to the homogeneous deformation observed in polycrystals. This effect has been recently documented by strain measurements of metal single crystals, which exhibit distinctive single slip behaviour in the initial stages of deformation. The results are discussed in terms of the formation of a network of deformation cells, continuously interacting with newly produced mobile dislocations.

Original languageEnglish
Pages (from-to)105-110
Number of pages6
JournalZeitschrift fur Kristallographie, Supplement
Volume1
Issue number23
Publication statusPublished - Dec 1 2006

Keywords

  • Dislocation structure
  • Line profile analysis
  • Single crystal deformation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Inorganic Chemistry

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