fig5

Figure 5. Transmission electron microscopy images and diffraction analysis of a grain with a size of 166 nm^[96]: (A) bright-field image; (B) corresponding diffraction pattern and indexing, triangles indicating the 2:17R superstructure reflections; and (C) dark-field image reflecting the twin variants (displayed as red and green), indicating the single 2:17R phase of the whole grain.