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Modeling Grain Boundary Interfaces in Pure Nickel

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

Abstract

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.

Keywords

Crystal-Plasticity Finite Elements Grain Boundary Deformation 

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5. References

  1. 1.
    Becker R and Panchanadeeswaran S 1995 Effects of Grain Interactions on Deformation and Local Texture in Polycrystals Acta Metall. Mater. 43 2701–19CrossRefGoogle Scholar
  2. 2.
    Bhattacharyya A, El-Danaf E, Kalidindi S R, Doherty R D, 2001 Evolution of grain-scale microstructure during large strain simple compression of polycrystalline aluminum with quasi-columnar grains International Journal of Plasticity 17 861–883CrossRefGoogle Scholar
  3. 3.
    Marin E and Dawson P R 1998 Elastoplastic finite element analysis of metal deformation using polycrystal constitutive models Comp. Methods in Appl. Mech. and Eng 1998 165 1–21CrossRefGoogle Scholar
  4. 4.
    Turner T J, and Miller M P 2007 Modeling the influence of material structure on deformation induced surface roughening in AA7050 thick plate ASME Journal of Engineering Materials and Technology 129 367–79CrossRefGoogle Scholar
  5. 5.
    Turner T J, and Semiatin, S L 2011 Modeling large-strain deformation behaviour and neighborhood effects during hot working of a coarse-grain nickel-base superalloy Modeling and Simulation in Materials Science and Engineering, 19, 1–25CrossRefGoogle Scholar
  6. 6.
    Shade P A, Wheeler R, Choi Y S, Uchic M D, Dimiduk D M, Fraser H L 2009 A combined experimental and simulation study to examine lateral constraint effects on microcompression of single-slip oriented single crystals Acta Mater. 57 4580–87CrossRefGoogle Scholar
  7. 7.
    Wheeler R, Shade P A, and Uchic M D 2012 Insights gained through image analysis during in-situ micromechanical experiments JOM In pressGoogle Scholar
  8. 8.
    Kocks U F 1976 Laws for work-hardening and low-temperature creep ASME J. Eng. Mater. Tech 98 76–85CrossRefGoogle Scholar
  9. 9.
    Mathur K, and Dawson P R 1989 On modeling the development of crystallographic texture in bulk forming processes Inter. J. Plasticity 5 67–94CrossRefGoogle Scholar
  10. 10.
    Anderson A, Cooper R, Neely R, Nichols A, Sharp R, Wallin B 2003 Users manual for ALE3D—an arbitrary Lagrange/Eulerian 3D code system Technical Report UCRL-MA-152204, Lawrence Livermore National Laboratory Google Scholar
  11. 11.
    Hosford WF, The Mechanics of Crystals and Textured Polycrystals (New York, NY, Oxford University Press, 1993)Google Scholar

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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