Abstract
A significant role is played by shear bands in controlling plasticity and failure mode in metallic glasses MGs. Atomic force microscopy AFM together with a nanoindender was previously used to observe shear band blocking. In this work, we have developed a correlation between finite element FE analysis and in situ SEM characterization, AFM topographic and frictional measurements. The experiments are performed in notched thin ribbons of Cu60Zr30Ti10 MG. Based on Gao’s FE formulation integrating Spaepen’s micromechanical model and AFM topographic analysis allow us to get further insights on the propagation, intersection and shear band offsets. Different shear band networks emanating at near and far plastic zones from the notch roots are observed as the tensile load was increased. The intersection is found weak between individual shear bands. Simulations and direct AFM frictional tests on pile up of shear bands did not reveal any work hardening that is due to intersection. The conjugate shear bands remains inactive and the propagation direction of shear band that can be deviated by the pre-existing one is not seen.
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Senhoury, M.A., Bouzakher, B., Gharbi, F., Benameur, T. (2019). Shear Bands Behavior in Notched Cu60Zr30Ti10 Metallic Glass. In: Benamara, A., Haddar, M., Tarek, B., Salah, M., Fakher, C. (eds) Advances in Mechanical Engineering and Mechanics. CoTuMe 2018. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-19781-0_24
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DOI: https://doi.org/10.1007/978-3-030-19781-0_24
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