ABSTRACT Metallic glasses (MGs) are arguably one of the most exciting metallic systems in the past 30 years, attracting significant research effort and undergoing rapid development. Parallel to research on crystalline metals, the sample size has been exploited as property-tuning parameters for MGs. It has been shown that nanometre-sized MG samples exhibit higher-than-bulk elastic limit, tensile strength, and non-zero tensile ductility. While some of the size-related observations have been generally accepted, others have been poorly understood, even hotly debated. Of particular interests is the importance of sample preparation in experiments and model generation in simulations. Here, we will review how the sample size affects mechanical properties including the elastic, plastic, fracture properties, and fatigue endurance, as well as various proposed size-dependent mechanisms and relevant length scales.

中文翻译：

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金属玻璃的尺寸相关机械响应

摘要 金属玻璃 (MGs) 可以说是过去 30 年来最令人兴奋的金属系统之一，吸引了大量的研究工作并经历了快速的发展。在研究结晶金属的同时，样本大小已被用作 MG 的属性调整参数。已经表明，纳米尺寸的 MG 样品表现出高于整体的弹性极限、拉伸强度和非零拉伸延展性。虽然一些与尺寸相关的观察结果已被普遍接受，但其他观察结果却知之甚少，甚至引起激烈争论。特别令人感兴趣的是实验中样品制备和模拟中模型生成的重要性。在这里，我们将回顾样本大小如何影响机械性能，包括弹性、塑性、断裂性能和疲劳耐久性，