ABSTRACT Twinning plays important role in plastic deformation of Mg alloys. However, it is difficult to obtain full information on twinning structures through transmission electron microscope observations. Here, we developed a new method to reconstruct the three-dimensional structure of a twin boundary. The {10 2} twin was observed from three directions, i.e. the [11 0], [20 1], and [4 3] zone axes, in order to establish the atomic model of the boundary. Additionally, we propose that the observed directions for {10 1} and {10 3} twins should be [11 3] & [10 1] and [2 1] & [5 3], respectively.

中文翻译：

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镁合金孪晶界面的原子尺度三维结构表征

摘要 孪晶在镁合金的塑性变形中起重要作用。然而，通过透射电子显微镜观察很难获得孪生结构的完整信息。在这里，我们开发了一种新方法来重建孪生边界的三维结构。从[11 0]、[20 1]和[4 3]带轴三个方向观察{10 2}孪晶，以建立边界的原子模型。此外，我们建议 {10 1} 和 {10 3} 双胞胎的观察方向应分别为 [11 3] & [10 1] 和 [2 1] & [5 3]。