Molecular dynamics simulation is performed to simulate the tension–compression fatigue of notched metallic glasses (MGs), and the notch effect of MGs is explored. The notches will accelerate the accumulation of shear transition zones, leading to faster shear banding around the notches’ root causing it to undergo severe plastic deformation. Furthermore, a qualitative investigation of the notched MGs demonstrates that fatigue life gradually becomes shorter with the increase in sharpness until it reaches a critical scale. The fatigue performance of blunt notches is stronger than that of sharp notches. Making the notches blunter can improve the fatigue life of MGs.

中文翻译：

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Cu ₅₀ Zr ₅₀金属玻璃在循环载荷下的缺口疲劳：分子动力学模拟

进行分子动力学模拟以模拟缺口金属玻璃（MGs）的拉压疲劳，并探索MGs的缺口效应。缺口将加速剪切过渡区的积累，导致缺口根部周围的剪切带更快，导致其发生严重的塑性变形。此外，对缺口 MG 的定性研究表明，随着锐度的增加，疲劳寿命逐渐变短，直到达到临界规模。钝缺口的疲劳性能强于锐缺口。使缺口变钝可以提高MG的疲劳寿命。