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Grain Boundary Modeling

  • Mohammed CherkaouiEmail author
  • Laurent Capolungo
Chapter
  • 960 Downloads
Part of the Springer Series in Materials Science book series (SSMATERIALS, volume 112)

All structures tend to reach a minimum energy configuration; a perfect single crystal, for example, is the illustration of such configuration. However, the former structure with very low internal energy may not be suitable for all domains of application. Indeed, depending on the desired performance, the introduction of defects into a perfect microstructure can prove advantageous. Doped silicon plates and doped ceramics are good examples of the possible ameliorations resulting from the presence of defects in a material. Similarly to dopants, grain boundaries can lead to improved materials response. In general, grain boundaries provide barriers to the motion of dislocations within a grain – this in turns leads to a more pronounced hardening – and can also act as barrier to crack propagation, which can improve the materials’ ductility.

Keywords

Edge Dislocation Misorientation Angle Coincident Site Lattice Boundary Dislocation Symmetric Tilt 
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, LLC 2009

Authors and Affiliations

  1. 1.Georgia Institute of TechnologyAtlantaUSA
  2. 2.Los Alamos National LaboratoryLos AlamosUSA

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