Imaging twins and dislocations in SEM

Electron channeling contrast imaging of twins and dislocations in twinning induced plasticity steels under controlled diffraction conditions in scanning electron microscopy

I Gutierrez-Urrutia, S Zaefferer, and D Raabe

Dislocation cells and mechanical twins have been imaged by electron channeling contrast imaging (ECCI) 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 (EBSD) for orientation-optimized ECCI with enhanced dislocation and interface contrast. The observations provide new insights into the strain hardening mechanisms of TWIP steels.