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arXiv · 1808.10055

Mapping the full lattice strain tensor of a single dislocation by High Angular Resolution Transmission Kikuchi Diffraction (HR-TKD)

Hongbing Yu·Junliang Liu·Phani Karamched·Angus J. Wilkinson·Felix Hofmann
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Abstract

The full lattice strain tensor and lattice rotations induced by a dislocation in pure tungsten were mapped using high-resolution transmission Kikuchi diffraction (HR-TKD) in a SEM. The HR-TKD measurement agrees very well with a forward calculation using an elastically isotropic model of the dislocation and its Burgers vector. Our results demonstrate that the spatial and angular resolution of HR-TKD in SEM is sufficiently high to resolve the details of lattice distortions near individual dislocations. This capability opens a number of new interesting opportunities, for example determining the Burgers vector of an unknown dislocation in a fast and straightforward way.

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Hongbing Yu, Junliang Liu, Phani Karamched, Angus J. Wilkinson, Felix Hofmann. 2018-08-29. Mapping the full lattice strain tensor of a single dislocation by High Angular Resolution Transmission Kikuchi Diffraction (HR-TKD). https://arxiv.org/abs/1808.10055

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