|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced Characterization Techniques for Quantifying and Modeling Deformation
||Correlating Structural Heterogeneity to Deformation of Metallic Glasses Using Fluctuation Microscopy and Mesoscale Simulation
||Soohyun Im, Pengyang Zhao, Ju Li, Yunzhi Wang, Jinwoo Hwang
|On-Site Speaker (Planned)
The correlation between the nanoscale structural heterogeneity and the deformation of metallic glasses is presently of great research interest. However, such correlation is difficult to study due to the challenges in the experimental characterization of heterogeneity, and the temporal and spatial limits of often-used atomistic simulations. We use a novel combination of fluctuation microscopy and mesoscale deformation simulation to study the correlation between the structural heterogeneity and deformation of metallic glasses beyond the limits of conventional methods. Fluctuation microscopy can measure structural heterogeneity based on the quantitative analysis of electron nanodiffraction, and the heterogeneity information is then incorporated into our mesoscale model that can simulate the deformation of the glass, including shear band formation and propagation. This new approach provides new insights on the nature of shear localization in these glasses, including how the nanoscale structural heterogeneity is related to the previously suggested plasticity carriers, such as shear transformation zones.
||Planned: Supplemental Proceedings volume