Skip to main content Accessibility help
×
×
Home

Dislocation density based crystal plasticity finite element simulation of Al bicrystal with grain boundary effects

  • Zhe Leng (a1), David P. Field (a1) and Alankar Alankar (a2)

Abstract

Crystal plasticity finite element method is a useful tool to investigate the anisotropic mechanical behaviors as well as the microstructure evolution of metallic materials and it is widely used on single crystals and polycrystalline materials. However, grain boundary involved mechanisms are barely included in the polycrystalline models, and modeling the interaction between the dislocation and the grain boundaries in polycrystalline materials in a physically consisstent way is still a long-standing, unsolved problem. In our analysis, a dislocation density based crystal plasticity finite element model is proposed, and the interaction between the dislocation density and the grain boundaries is included in the model kinematically. The model is then applied to Al bicrystals under 10% compression to investigate the effects of grain boundary character, e.g. grain boundary misorientation and grain boundary normal, on the stress state and the microstructure evolution. The modeling results suggest a reasonable correspondence with the experimental result and the grain boundary character plays a crucial role in the stress concentration and dislocation patterning.

Copyright

References

Hide All
[1] Ashmawi, W. M., Zikry, M. A.: Prediction of grain boundary interfacial mechanisms in polycrystalline materials, Journal of Engineering Materials and Technology, 2002, Vol. 124, pp. 89
[2] Evers, L. P., Brekelmans, W. A. M., Geers, M. G. D. Scale dependent crystal plasticity framework with dislocation density and grain boundary effects, International journal of solids and structures, 2004, Vol. 41, pp. 52095230.
[3] Asaro, R.J. and Rice, J.R., J.Mech.Phys. Solids, 25, 309338, 1977.
[4] Arsenlis, Athanasios, Parks, David M., Becker, Richard, Bulatov, Vasily V., Journal of the Mechanics and Physics of Solids, 52 (2004) 12131246.
[5] Ohashi, T.: 2005. Crystal plasticity analysis of dislocation emission from micro voids. Int. J. Plast. vol. 21, pp. 20712088.
[6] Ma, A., Roters, F., Raabe, D., Acta Materialia 54 (2006) 21812194.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed