Anisotropic Plasticity Modeling Incorporating EBSD Characterization of Tantalum and Zirconium

  • John F. Bingert
  • Thomas A. Mason
  • George C. Kaschner
  • Paul J. Maudlin
  • George T. GrayIII

Abstract

The application of automated EBSD techniques in the context of an overall predictive materials modeling effort incorporating anisotropic properties for tantalum and zirconium is covered in this chapter. The focus will be on the role of microtextural investigations as an integral tool supporting the development and validation of material models that incorporate anisotropic constitutive behavior. Continuum mechanics codes require accurate descriptions of materials behavior to adequately predict large-strain deformation response. The corresponding requirement of characterizing micro structure s after significant deformation places severe requirements on the EBSD system. In this work, a Philips XL30 SEM employing a warm Schottky FEG was used for all data collection; the combination of high resolution with adequate beam current was a necessity for analyzing fine detail amid heavily worked structures. The ability to spatially resolve orientation differences on the order of 100 nm is achievable. All EBSD data collection and analysis was performed with TSL’s OIM™ software, while the popLA code (Kallend et al., 1991) was used for x-ray texture analysis.

Keywords

Pole Figure Yield Surface Mechanical Threshold Stress Polycrystal Plasticity Taylor Cylinder 
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 New York 2000

Authors and Affiliations

  • John F. Bingert
    • 1
  • Thomas A. Mason
    • 1
  • George C. Kaschner
    • 1
  • Paul J. Maudlin
    • 2
  • George T. GrayIII
    • 1
  1. 1.Materials Science and Technology DivisionLos Alamos National LaboratoryLos AlamosUSA
  2. 2.Theoretical DivisionLos Alamos National LaboratoryLos AlamosUSA

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