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Updated: Mar 8, 2026

A Novel Method for In Situ Electromechanical Characterization of Nanoscale Specimens
Published on: June 2, 2017
Effect of triple junctions on deformation twinning in a nanostructured Cu-Zn alloy: A statistical study using
Silu Liu1, Xiaolong Ma2, Lingzhen Li3
1Nano Structural Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China; Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA.
Abstract:
Scanning electron microscopy transmission Kikuchi diffraction is able to identify twins in nanocrystalline material, regardless of their crystallographic orientation. In this study, it was employed to characterize deformation twins in Cu/10 wt % Zn processed by high-pressure torsion. It was found that in 83% of grains containing twins, at least one twin intersects with a triple junction. This suggests that triple junctions could have promoted the nucleation of deformation twins. It should be cautioned that this technique might be unable to detect extremely small nanoscale twins thinner than its step size.
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