Abstract The range of supercooled liquid region (ΔT) is the key parameter for evaluating the thermal stability and glass-forming ability of metallic glasses. The enhancement of ΔT is of significance not only for the glass formation and stability, but also for their thermoplastic forming ability. Traditional approaches to increase ΔT are composition regulation or dynamical modulation, which are either time-consuming or difficult to be controlled. Here, through a high-frequency ultrasonic vibration treatment, we show that the ΔT of a La-based metallic glass can be significantly widened from 64 K to 83 K, around 30% increment. This behavior is physically originated from the denser atomic packing and a lower stable basin in the energy landscape induced by the ultrasonic vibration energy. This work might provide a ready route to stabilize the supercooled liquid and glass, and give an insight into the understanding of the glass-forming of amorphous materials.

中文翻译：

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振动引起的金属过冷液体的超稳定性

摘要 过冷液体区范围（ΔT）是评价金属玻璃热稳定性和玻璃形成能力的关键参数。ΔT 的提高不仅对玻璃的形成和稳定性具有重要意义，而且对其热塑性成型能力也具有重要意义。增加 ΔT 的传统方法是成分调节或动态调制，它们要么耗时要么难以控制。在这里，通过高频超声振动处理，我们表明 La 基金属玻璃的 ΔT 可以从 64 K 显着扩大到 83 K，增量约为 30%。这种行为在物理上源于由超声波振动能量引起的能量景观中更密集的原子堆积和较低的稳定盆地。