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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Bulk Metallic Glasses XVII
Presentation Title Local Dynamics in Metallic Liquids Studied by Inelastic Neutron Scattering
Author(s) Zengquan Wang, Wojciech Dmowski, Hui Wang, Takeshi Egami
On-Site Speaker (Planned) Zengquan Wang
Abstract Scope Local dynamics in liquid metals has been poorly understood when compared to their crystalline counterparts. For instance, the atomistic origin of the viscous behavior is not well elucidated, even though viscosity is one of the most basic properties for liquids. In this research, inelastic neutron scattering (INS) experiments were carried out on various metallic liquid droplets (including single, binary, and complex BMG forming liquids), using an electro-static levitator, at different temperatures at SNS. The dynamic structure function S(Q,E) and the Van Hove correlation function G(r,t) were then obtained. Compared with MD simulation results, the local configuration change was analyzed based on distinct G(r,t) and proved as the elementary excitation in high temperature metallic liquids, thus controlling their shear viscosity. Also, self diffusion behaviors were analyzed based on self G(r,t). A comprehensive understanding of the local dynamics was made in various metallic liquids.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Quantitative Connection Between Shear Band Mediated Plasticity and Fracture Initiation Toughness of Metallic Glasses
An Overview of BMG Additive Manufacturing Activities and Future Directions at NASA JPL
Anelastic Relaxation as a Probe of Structural Evolution of Metallic Glasses
Atomic Structural Features Hidden in Structure Factor of Metallic Alloy Liquids
Catalytic Metallic Glasses for Clean Energy Applications
Comparison of Excess Entropy in Strong and Fragile Glasses
Correlating Structural Heterogeneity to Properties of Metallic Glasses using Mesoscale Deformation Simulation Incorporating 4D-STEM
Corrosion Behavior of SAM2×5 Amorphous Steel / Crystalline in situ Composite
Crystallization during Welding of Bulk Metallic Glasses
Effect of Ni-Nb Metallic Glass on Moderating the Shock Damage in Crystalline Ni-amorphous Ni62Nb38 Nanocomposite Structure: A Molecular Dynamics Study
Effect of Thermal History on Crystallization Kinetics of a Bulk Glass-forming Liquid
Effects of Testing Temperature and Sample-size on Tensile Deformation of Metallic Glass
Evolution of Material Properties in Fragile Bulk Metallic Glasses
Glass-forming Liquids Processed Under Ultrahigh Gravitational Accelerations
High Pressure Quenched Metallic Glasses
Is Atomic Size-mismatch a Sufficient Condition to Yield Fragility in Bulk Metallic Glass Forming Liquids?
J-10: Competitive Formation of Metallic Glasses in Ternary Eutectic Systems
J-12: High Saturation Magnetic Flux Density of New Nanocomposite Materials Annealed in Various Temperatures
J-13: Shear Transformation Zone Properties from Nonlinear Anelastic Deformation
J-14: The Effect of Severe Plastic Deformation on the Relaxation Dynamics of a Bulk Metallic Glass Studied by X-ray Photon Correlation Spectroscopy
J-9: Atomic Structure and Properties of Co-Ta-B Bulk Metallic Glasses
Local Dynamics in Metallic Liquids Studied by Inelastic Neutron Scattering
Measuring Metallic Glass Viscosities Over Wide Composition Ranges
Mechanical Deformation of Iron-based in situ Metallic Glass Matrix Composites
Metallic Glasses for Space Mechanism Applications
Microstructural, Mechanical and Thermal Characterization of Mg65Ni25Y5M5 (M= Si, B, La) Amorphous Alloy by Melt Spinning
Molecular Dynamics Simulations of Iron-based Metallic Glasses during Spark Plasma Sintering
Nanoscale Heterogeneity on Mechanical Performance of Cu-Zr-Al Thin Film Metallic Glasses
Nucleation of Shear Bands in Al-based Metallic Glasses and Their Composites
Rapid Discharge Forming of Metallic Glasses: A Novel Metals Manufacturing Platform
Relaxation Phenomena in Severely Deformed Bulk Metallic Glasses
Role of Heterogeneous Microstructure Modifications in Affecting Fracture Toughness of Zr-based Bulk Metallic Glasses
Shear Band Nucleation Kinetics in Metallic Glasses
Small-scale Mechanical Behavior of Metallic Glasses and their Composites
Solvent-rich Magnesium-based Bulk Metallic Glasses in the Mg–Pd–Ca and Mg–Pd–Yb Alloy Systems
Stress Breaks Universal Aging Behavior in a Metallic Glass
Structural Modifications and their Effect on the Mechanical Properties of a Zr-based Metallic Glass
Structure-property-processing Relationships in Bulk Metallic Glasses Suggest a High, but Narrow Path to Success
Studying Phase Transitions in Slow Motion: Ultrafast-calorimetry Experiments on Bulk Metallic Glasses
Synthesis and Properties of BMG Type Nanoglasses by Thin Film Vapour Deposition
The Effect of Thermal and Mechanical Cycling on Atomic Structure and Fracture Toughness of Metallic Glasses
The Intriguing Structure of Marginal Glass Forming Alloys
The Physics of an Elemental Ag Glass: First Order Glass Transition and Melting
Theoretical Strength and Prediction of Structural Defects in Metallic Glasses
Thin Film Metallic Glass Broad-spectrum Mirror Coatings
Toward Tunable Superelastic Bulk Metallic Glass Composite
X-ray Diffraction Study of the Local Topological Rearrangement and Plasticity of Bulk Metallic Glasses

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