晶界偏析以及界面相和纳米晶材料力学性能的调控

姜水淼, 明开胜, 郑士建

A Review on Grain Boundary Segregation, Interfacial Phase and Mechanical Property Adjusting-controlling for Nanocrystalline Materials

JIANG Shuimiao, MING Kaisheng, ZHENG Shijian

图3 Cu-Zr合金中不同的晶界结构对位错发射和滑移的影响[34]

Fig.3 Effect of different grain boundary structures on dislocation emission and slip of Cu-Zr alloys[34] (a) quilibrium grain boundary structures obtained using the hybrid MD/MC method, (b) atomic shear stress distribution during dislocation propagation simulations at 3% applied shear strain，black arrows denote local regions of low stress, (c) relative changes of the critical stress required for dislocation emission and propagation, as measured by the MD simulation