Notch fatigue of Cu_(50)Zr_(50) metallic glasses under cyclic loading: molecular dynamics simulations |
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| Authors: | Yong Yang Hairui Li Zailin Yang Jin Liu Evans Kabutey Kateye Jianwei Zhao |
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| Institution: | 1.College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China;2.Key Laboratory of Advanced Material of Ship and Mechanics, Ministry of Industry and Information Technology, Harbin Engineering University, Harbin 150001, China;3.College of Materials and Textile Engineering, Jiaxing University, Jiaxing 314000, China |
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| Abstract: | 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. |
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| Keywords: | metallic glasses notches fatigue life molecular dynamics simulations |
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