fig21

Figure 21. (A) Initial 3D atomic structure of nanopolycrystalline Zn before loading; (B) schematic of the Y-Z cross-section; (C) distribution of <a> dislocation atoms (identified via CNA). Evolution of atomic structures on the Y-Z cross-section and <a> dislocation distribution at applied strains (D and H) 3%, (E and I) 5%, (F and J) 9%, and (G and K) 15%. The red, green, blue, and white atoms represent HCP, FCC, BCC, and other structures, respectively. 3D: Three-dimensional; CNA: common neighbor analysis; HCP: hexagonal close-packed; FCC: face-centered cubic; BCC: body-centered cubic.