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Meeting Materials Science & Technology 2020
Symposium Glasses, Optical Materials, and their Functional Applications: Current Issues in Science & Technology
Presentation Title Effect of Nanoscale Phase Separation on the Fracture Behavior of Glasses: Toward Tough, Yet Transparent Glasses
Author(s) Jared Rivera
On-Site Speaker (Planned) Jared Rivera
Abstract Scope Although oxide glasses have many unique properties, their range of applications remains limited by their brittleness. By mimicking the microstructure of composite materials, the presence of controlled nanoscale phase separation in glass could overcome this limitation. However, the nature of the toughening mechanism induced by such nanostructuring remains poorly understood. Here, based on peridynamic simulations, we investigate the effect of nanoscale phase separation on the crack propagation mechanism. We show that phase separation can significantly increase glass's toughness (with up to a 90% increase in the fracture energy for the range of conditions investigated herein). The extent of toughening is found to arise from a balance between the overall cohesion of the phase-separated glass and the propensity for crack deflection. This suggests that controlled nanoscale phase separation is a promising route toward the development of tough, yet optically transparent glasses.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

2020 Alfred R. Cooper Young Scholar Award Presentation: Beyond the Average: A Statistical Mechanical Exploration of Topological Fluctuations in Glass-Forming Systems
Cooper Distinguished Lecture: Exploring the Amorphous State of Matter by Roaming About the Network Building Blocks
Decoding Structure-Dynamics Correlations in SiO2 Supercooled Liquid by Machine Learning
Development of YAG-alumina Composites for the Lightening Applications
Effect of Nanoscale Phase Separation on the Fracture Behavior of Glasses: Toward Tough, Yet Transparent Glasses
Effect of Transition Metal Impurities on the Properties of ZnSe Single Crystals
Elucidating Defect Behaviors and Lithium Ion Diffusion Mechanisms in Solid State Electrolytes from Atomistic Computer Simulations
Enhanced Optical Nonlinearity in Bismuth Borosilicate Glass Dispersed with Eu2O3 Stabilized Gold Nanoparticles
Glasses beyond Megabar Pressures
Melt-Quenching vs. Sol-gel vs. Vapor Deposition vs. Irradiation: Influence of the Synthesis Method on the Structure of SiO2
Photo-elastic Confirmation of Fast Surface Relaxation of Silica Glasses in the Presence of Water
Relative Roles of O and Si in Crack Nucleation and Propagation Mechanisms in Amorphous Silica
Surface Reactivity of Multi-component Glasses
Terahertz Time-domain Spectroscopy of Glasses

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