Fig. 4: Transmission electron microscopy (TEM) microstructure of 16 vol% DMGr/Cu-60 h before and after micropillar compression.
From: High strength and plasticity in disordered multilayer graphene reinforced copper composites
a, b BF-STEM and HAADF-STEM images before compression. c, d BF-STEM and HAADF-STEM images after compression. e Schematic map showing strengthening mechanisms in UFG, NC grains, and our composite. The curve represents the variation of strength with grain size, where the decrease in strength is caused by grain rotation or GBs sliding. In addition, the inset at the top displays structure changes and DMGr sliding in our composite during compression. f–j TEM images under in situ compression at different instantaneous times.
