Dislocation cells and mechanical twins were imaged by electron channelling contrast imaging in a scanning electron microscope under controlled diffraction conditions in a deformed Fe–22Mn–0.6C twinning-induced plasticity steel using a novel set-up. The approach uses electron backscattered diffraction for orientation-optimized electron channelling contrast imaging with enhanced dislocation and interface contrast. The observations provide new insights into the strain-hardening mechanisms of twinning-induced plasticity steels.

Electron Channeling Contrast Imaging of Twins and Dislocations in Twinning-Induced Plasticity Steels under Controlled Diffraction Conditions in a Scanning Electron Microscope. I.Gutierrez-Urrutia, S.Zaefferer, D.Raabe: Scripta Materialia, 2009, 61[7], 737-40