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Open Access Publications from the University of California

In situ nanobeam electron diffraction strain mapping of planar slip in stainless steel

  • Author(s): Pekin, TC;
  • Gammer, C;
  • Ciston, J;
  • Ophus, C;
  • Minor, AM
  • et al.

Nanobeam electron diffraction strain mapping has been used to measure the strain evolution in stainless steel under in situ deformation. As the amount of deformation increases, the leading dislocation of a planar slip band leaves behind a residual strain in the form of a small lattice expansion. Dislocation analysis confirmed that the dislocations involved were <011 > type. While the characteristic residual strain of planar slip has often been observed, it has never before been directly measured. Our results provide a view into the dynamic mechanisms of planar slip, and showcase the possibilities of multidimensional in situ imaging.

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