Intensive power ultrasound is introduced to Zr_46.75Cu_46.75Al_6.5 bulk metallic glass (BMG) as an easy-procurable, non-destructive physical method to modulate its atomic rearrangement and shear deformation behavior. The microstructure after ultrasonic excitation with amplitude about 15 μm in 20 kHz for 2 h is characterized by large amount of Cu₁₀Zr₇ nanocrystals with size of 20–50 nm embedded in the glass matrix. This leads to a sharp increase in the critical stress for the first pop-in event of shear banding, and thus simultaneously improves both compressive plasticity and yield strength. Our findings provide a novel approach for overcoming the strength-ductility trade-off dilemma.

将强功率超声引入Zr _46.75 Cu _46.75 Al _6.5大块金属玻璃（BMG）中，作为一种易于获取的无损物理方法，可调节其原子重排和剪切变形行为。超声激发后，在20 kHz内以大约15μm的振幅振动2 h后的微观结构，其特征是在玻璃基质中嵌入了大量尺寸为20–50 nm的Cu ₁₀ Zr ₇纳米晶体。这导致剪切带第一次出现时的临界应力急剧增加，因此同时提高了压缩塑性和屈服强度。我们的发现为克服强度-延展性的权衡困境提供了一种新颖的方法。