Interface structure plays a vital role in plasticity of metallic nanolayered composites (MNCs). In this work, we explore the effects of thick three-dimensional (3D) interface structures on deformation behavior of Cu/Nb MNCs by using molecular dynamics simulation. Our analysis reveals that the 3D interface structure is crystalline dominant rather than amorphous and dislocations are distributed on multiple slip planes within the 3D interface region. The effect of layer thickness on the strength of MNCs has been suppressed by the 3D interface structure, which can also inhibit shear band formation.

中文翻译：

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厚界面Cu/Nb金属纳米层复合材料塑性的原子模拟

界面结构在金属纳米层复合材料（MNC）的塑性中起着至关重要的作用。在这项工作中，我们通过分子动力学模拟探讨了厚三维（3D）界面结构对 Cu/Nb MNC 变形行为的影响。我们的分析表明，3D 界面结构以晶体为主，而不是非晶态，并且位错分布在 3D 界面区域内的多个滑移面上。3D界面结构抑制了层厚度对MNC强度的影响，这也可以抑制剪切带的形成。