Nanocrystalline grain boundary engineering: Increasing $\Sigma$3 boundary fraction in pure Ni with thermomechanical treatments

  title={Nanocrystalline grain boundary engineering: Increasing \$\Sigma\$3 boundary fraction in pure Ni with thermomechanical treatments},
  author={David B. Bober and Mukul Kumar and T. Rupert},
  journal={arXiv: Materials Science},
Grain boundary networks should play a dominant role in determining the mechanical properties of nanocrystalline metals. However, these networks are difficult to characterize and their response to deformation is incompletely understood. In this work, we study the grain boundary network of nanocrystalline Ni and explore whether it can be modified by plastic deformation. Mechanical cycling at room temperature did not lead to structural evolution, but elevated temperature cycling did alter the… Expand
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