Notch fatigue of Cu50Zr50 metallic glasses under cyclic loading:molecular dynamics simulations

• 作者: Yong Yang Hairui Li Zailin Yang Jin Liu Evans Kabutey Kateye Jianwei Zhao
• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2021,（6）
• 所属期刊栏目: ATOMIC,MOLECULAR,OPTICAL (AMO) AND PLASMA PHYSICS,CHEMICAL PHYSICS
• 页码范围: 119-125
• 页数: 7页
• 语种: 英文

摘要

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.