Al-Li合金中 δ′/θ′/δ′复合沉淀相结构演化及稳定性的第一性原理探究

王硕, 王俊升

Structural Evolution and Stability of the δ′/θ′/δ′ Composite Precipitate in Al-Li Alloys: A First-Principles Study

WANG Shuo, WANG Junsheng

表2 基于Rose断裂模型拟合得到的3种界面结构的临界位移(dic),解理功(Gc)以及理想解理应力(σic)

Table 2 Critical spacing (dic), cleavage energy (Gc), and the ideal cleavage stress (σic) for three interfacial structures with different phase relationships evaluated by RGS model under tensile deformation

Structure dic / nm Gc / (J·m-2) σic / GPa In-phase #2 0.059 1.948 12.356 Anti-phase a / 2[010] 0.050 1.341 9.796 Anti-phase a / 2[110] 0.061 2.097 12.659