Abstract
A novel experimental configuration was devised to monitor the deformation mechanisms in metallic glasses at the microscopic scale. The experiment is comprised of a wedge like cylindrical indenter while monitoring the evolution of the associated plastic zone, and crack initiation and propagation by a microscopic digital image correlation system. A new algorithm is developed to measure the localized shear strain with the shear band, which found to be in excess of several thousand percent. The deformation within the band and outside the band were resolved and showed very intricate cooperative interactions. The measurements and in-situ observations shed lights on the micromechanisms of deformation in BMG alloys.
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This work is supported by US National Science Foundation (NSF) with an award number CMS-0134111 and DMR-1807545.
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Wang, H., Bastawros, A. (2021). Characterization of Shear Band Nucleation and Propagation in Bulk Metallic Glasses. In: Notbohm, J., Karanjgaokar, N., Franck, C., DelRio, F.W. (eds) Mechanics of Biological Systems and Materials & Micro-and Nanomechanics & Research Applications. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-030-59765-8_9
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