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Multiscale Modelling of Mechanical Anisotropy of Metals

  • Grethe Winther
Conference paper
Part of the IUTAM Bookseries book series (IUTAMBOOK, volume 13)

Abstract

The mechanical anisotropy of a rolled metal sheet depends both on its tex ture and dislocation boundary characteristics (boundary plane, misorientation angle and boundary spacing), thereby linking dislocation interactions at the nanometre scale to bulk properties through phenomena involving individual grains of dimensions of the order of 100 micrometres. The focus of the modelling is on the boundary plane. Atomistic and dislocation dynamics simulations have not yet been able to produce sufficiently realistic dislocation structures to provide the planes needed. Instead the boundary planes can be predicted at the grain scale based on the slip systems operating during rolling, which generate the dislocations available for inclusion in the boundaries. The predicted boundary planes are verified by transmission electron microscopy and the predicted anisotropy by mechanical testing.

Keywords

Slip System Dislocation Structure Grain Orientation Misorientation Angle Multiscale Modelling 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, B.V. 2009

Authors and Affiliations

  • Grethe Winther
    • 1
  1. 1.Center for Fundamental Research: Metal Structures in Four Dimensions, Materials Research Division, Risø National Laboratory for Sustainable EnergyTechnical University of DenmarkRoskildeDenmark

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