Abstract In this work we present molecular dynamics simulations on the creep behavior of Cu64Zr36 metallic glass composites. Our results reveal that all composites exhibit much higher creep rates than the homogeneous glass. This is because the glass–crystal interface acts like a weak interphase, where the activation of shear transformation zones is easier than in the surrounding glass. We observe that the creep behavior of the composites does not only depend on the interface area but also on the orientation of the interface with respect to the loading axis. We propose an explanation in terms of different mean Schmid factors of the interfaces, with the amorphous interface regions acting as preferential slip sites.

中文翻译：

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金属玻璃复合材料中的界面控制蠕变

摘要 在这项工作中，我们对 Cu64Zr36 金属玻璃复合材料的蠕变行为进行了分子动力学模拟。我们的结果表明，所有复合材料都表现出比均质玻璃高得多的蠕变速率。这是因为玻璃-晶体界面就像一个弱中间相，剪切转变区的激活比周围玻璃更容易。我们观察到复合材料的蠕变行为不仅取决于界面面积，还取决于界面相对于加载轴的方向。我们根据界面的不同平均 Schmid 因子提出了一种解释，其中非晶界面区域充当优先滑移位点。