Modes of grain growth and mechanism of dislocation reaction under applied biaxial strain: Atomistic and continuum modeling

Ying-Jun Gao^a^,^*(

), Qian-Qian Deng^a, Zhe-yuan Liu^a, Zong-Ji Huang^a, Yi-Xuan Li^a, Zhi-Rong Luo^a^,^b

Fig. 9.. (a) Schematic diagram of the initial GB dislocation structure of the grain system before the nucleation of the deformed grain. For the sake of the simplicity, the alternating arrangement of the composite dislocation vector B_i=b_i+b_i+1 here indicates the alternating arrangement of the GB dislocations, which structure of the GB is similar to that of Ref. [71]. (b) The alternating arrangement of dislocations B_i of the GBs splitting into two planar ATGBs shown in red box under the deviatoric deformation, and to generate new deformed grain 3 and 4 with orientation θ₃ and θ₄, respectively..