Dong Wang, Zhenyu Zhang, Dongdong Liu, Xingqiao Deng, Chunjing Shi, Yang Gu, Xiuqing Liu, Xiaoyu Liu, Wei Wen
Copper (Cu) has a soft-plastic nature, which makes it susceptible to damages from scratching or abrasive machining, such as lapping and polishing. It is a challenge to control these damages as the damage mechanism is elusive. Nonetheless, controlling damages is essential, especially on the atomic surfaces of Cu. To interpret the damage mechanism, in situ transmission electron microscopy (TEM) nanoindentation was performed using a cube-corner indenter with a radius of 57 nm at a loading speed of 5 nm s-1 . Experimental results showed that damages originate from dislocations, evolve to stack faults, and then form broken crystallites...
April 16, 2024: Nanoscale advances