Modeling Grain Boundary Interfaces in Pure Nickel

  • T. J. Turner
  • P. A. Shade
  • J. C. Schuren
  • M. A. Groeber
Conference paper


This work presents a three tiered modeling approach to examine grain boundary interfaces in a pure Nickel foil material utilizing a crystal plasticity based finite element model (CPFEM). The goal of this work is to calibrate a modeling approach through comparison to experimental data, and then use the models to gain insight into deformation at grain boundaries in Nickel and Nickel-base superalloy polycrystals. The first study utilizes a multi-crystal micro-tension specimen and simulations to calibrate the CPFEM model and examine the development of “hot-spots” or localized plasticity near the grain boundaries. Some orientation combinations exhibit localized plasticity along the boundary (bad-actor boundaries) while others do not. Insight from the deformation of this model is then used to instantiate simulations of Nickel bi-crystals which exhibit localized plasticity near the boundary. The third study embeds the grain boundary interfaces of interest, as determined from the bi-crystal simulations, into a larger polycrystalline simulation utilizing the same CPFEM framework. Using these interfaces we study deformation at these “characteristic” interfaces when subjected to the generalized loading conditions present in a polycrystalline microstructure.


Crystal-Plasticity Finite Elements Grain Boundary Deformation 


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Copyright information

© TMS (The Minerals, Metals & Materials Society) 2012

Authors and Affiliations

  • T. J. Turner
    • 1
  • P. A. Shade
    • 1
  • J. C. Schuren
    • 1
  • M. A. Groeber
    • 1
  1. 1.Air Force Research Laboratory, Materials and Manufacturing DirectorateAFRL/RXLMPWright-Patterson, AFBUSA

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