Effect of nickel segregation on CuΣ9 grain boundary undergone shear deformations
Liu Xiang-Yue1, Zhang Hong1, 2, 3, †, Cheng Xin-Lu1
       

(color online) Coincident lattice site diagram of Σ9(221) GB in fcc crystal. Characterization symbols are identical to those in Fig. 4. R1 and R2 are two different transformational types of GB structure during external loading, in which R1 is the equilibrium structure of Σ9(221) GB.