Dislocation density evolution during high pressure torsion of a nanocrystalline Ni–Fe alloy

@article{Wang2009DislocationDE,
  title={Dislocation density evolution during high pressure torsion of a nanocrystalline Ni–Fe alloy},
  author={Y. Wang and J. Ho and Y. Cao and Xiaozhou Liao and H. Li and Yonghao Zhao and E. Lavernia and S. P. Ringer and Yuntian Zhu},
  journal={Applied Physics Letters},
  year={2009},
  volume={94},
  pages={091911}
}
  • Y. Wang, J. Ho, +6 authors Yuntian Zhu
  • Published 2009
  • Physics
  • Applied Physics Letters
  • High-pressure torsion (HPT) induced dislocation density evolution in a nanocrystalline Ni-20 wt %Fe alloy was investigated using x-ray diffraction and transmission electron microscopy. Results suggest that the dislocation density evolution is fundamentally different from that in coarse-grained materials. The HPT process initially reduces the dislocation density within nanocrystalline grains and produces a large number of dislocations located at small-angle subgrain boundaries that are formed… CONTINUE READING

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