As a key raw material for industrial production and scientific research, intermetallic compounds (IMCs) powder has broad application prospects, and it has a performance breakthrough in its nanocrystalline state. Crystallized metallic glasses (MGs) are a class of IMCs, its powder has great potentials for electromagnetic conversion, catalysis, exhaust treatment and biomedical application. Although many powder fabrication methods exist, a simple, fast method to prepare ultra-fine grain IMC powders is still being pursued. Here we report a facile method to fabricate ultra-fine grain (<5 nm) crystallized MGs powder by ultrasonic vibration treatment (UVT). At room temperature and well below the ultimate material strength, UVT can rapidly breaks bulk crystallized MGs down to micron and nanoscale powders. Compared to other methods, UVT has an outstanding time advantage in within 60 s (1000 times faster than the ball milling). The experimental show that UVT causes rapid grain refinement in crystallized MGs, inducing fatigue crack nucleation at the grain boundaries (GBs) and then smash in milliseconds. Our results provide a fast and cost-efficient method for the production of micro and nano scale ultra-fine grain IMC powders.

作为工业生产和科研的关键原料，金属间化合物（IMCs）粉末具有广阔的应用前景，在其纳米晶状态下具有性能突破。结晶金属玻璃（MGs）是一类IMCs，其粉末在电磁转换、催化、废气处理和生物医学应用等方面具有巨大潜力。尽管存在许多粉末制造方法，但仍在寻求一种简单、快速制备超细晶粒 IMC 粉末的方法。在这里，我们报告了一种通过超声振动处理 (UVT) 制造超细晶粒 (<5 nm) 结晶 MGs 粉末的简便方法。在室温和远低于最终材料强度的情况下，UVT 可以将块状结晶 MG 快速分解成微米和纳米级粉末。与其他方法相比，UVT 在 60 秒内具有显着的时间优势（比球磨快 1000 倍）。实验表明，UVT 导致结晶 MG 中的晶粒快速细化，在晶界 (GBs) 诱导疲劳裂纹形核，然后在几毫秒内粉碎。我们的研究结果为生产微米级和纳米级超细晶粒 IMC 粉末提供了一种快速且具有成本效益的方法。