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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Bulk Metallic Glasses XV
Presentation Title On the Effect of Sample Size on the Fracture Toughness of Bulk Metallic Glasses
Author(s) Bernd Gludovatz, Jamie J. Kruzic, Robert O. Ritchie
On-Site Speaker (Planned) Robert O. Ritchie
Abstract Scope The excellent combination of high strength and low stiffness make bulk-metallic glasses (BMGs) candidate materials for many structural applications. Their fracture toughness, however, can vary markedly, and their ductility, particularly in tension/compression, is rather limited, although in bending they are quite ductile. Here, we report on a systematic study on Zr and Pd-based glasses to investigate the influence of sample size and loading condition on the fracture toughness of BMGs. Results show that with decreasing sample size the fracture behavior changes from brittle failure with low fracture toughness, via a semi-brittle failure regime, to fully ductile fracture and non-catastrophic failure with sub-critical crack growth, i.e., R-curve behavior. Our tests on samples subjected to different stress-states (three-point bending vs. tension loading) result in highly variable data which brings into question the extent of validity of nonlinear elastic fracture mechanics to characterize the toughness of BMGs.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


A Combinatorial Approach to Evaluate the Glass-forming Ability of Multi-component Bulk Metallic Glasses
A First-order Liquid-liquid Phase Transition in Undercooled Molten Pd-Ni-P Alloys
A Total Scattering Study of Thermal Expansion of Bulk Metallic Glasses
Aging Dynamics around a Shear Band in a Metallic Glass
Amorphous Magnetic Films
Atomic Structure and Properties of CuZrAl Metallic Glasses and Composites
Bulk Metallic Glasses: A High, but Narrow Path to Success
Catalytic Amorphous Metals in Energy Applications
Characteristics of Ideal Cluster Formulas for Zr-based Bulk Metallic Glasses
Cluster Connectivity in Metallic Glass
Commercial BMG's - Boutique Material or Disruptive Technology?
Comparison of Excess Entropy in Metallic and Oxide Glasses
Composition Dependence and Structural Signature of Beta-relaxation in La-based Metallic Glasses
Compositional Effect on Temperature-induced Atomic Structure Evolution in Liquid Ga-In, Ga-Sn and In-Sn Alloys
Controllable Metal Nanostructures by Thermoplastic Drawing of Metallic Glasses
Correlation between Structural Heterogeneities and Serration Flow Behavior in Zr-based Metallic Glass
Damping, Elasticity, and Density of Sputtered Zr-Ni-Al Nano-films as Gleaned from Laser Interferometry
Deformation in Amorphous Notched Bars; A Discrete Shear Transformation Zone Plasticity Analysis
Deformation Induced Structural Relaxation in La-based BMGs
Deformation Mechanism of Nanostructure Metallic Glass
Density Evolution, Strain Hardening, and Plastic Flow of a Metallic Glass in a Notched Tensile Test
Designing Color in Gold Metallic Glasses
Determination of Critical Cooling Rates in Metallic Glass Forming Alloy Libraries through Laser Spike Annealing
Ductile Fracture in Notched Bulk Metallic Glasses
Ductility of Metallic Glasses
Dynamics of Inherent Structure Energy Evolution in Metallic Glasses
Effect of Co Addition on Martensitic Transformation in a B2-containing CuZr-based BMG Composite Revealed by In Situ Neutron Diffraction
Effect of Pressure on Viscous Deformation during Spark Plasma Sintering of Fe – Based Bulk Amorphous Alloy
Effects of Annealing and Irradiation on the Mechanical and Microstructural Properties of Bulk Metallic Glass Alloys
Effects of Pressure on the Structure and Properties of Metallic Glasses Examined by Computer Simulation
Elastic Heterogeneities in Bulk Metallic Glasses
Exploring Novel Functionalities of Metallic Glasses
Fe-based Metallic Glass (MG) Ribbons for Energy Applications
Features of Interfaces in a Cu-Zr-Al Based Metallic Glass Obtained by Densification of Amorphous Powders
Fictive Temperature Controlling Ductility in Metallic Glasses
Formation and Properties of Ni-free Ti-based Bulk Metallic Glasses for Biomedical Applications
Formation and Properties of Pd-Cu-Ag-Au-Si Glassy Alloys
Formation of Zr-Cu-Al-Ag-Ti Bulk Metallic Glass Composites with Deformation Induced Martensitic Transformation
Friction and Wear Behavior of Ti-based In-situ Dendrite Amorphous Composites
Friction and Wear Behaviour of Ti-based Bulk Metallic Glass Composites
High Pressure Quenched Metallic Glasses
Improvement of Plasticity of Bulk Metallic Glasses by Addition of a Crystalline Phase
Influence of Composition on Glass Formation and Structure in Zr-Al-Ni Alloys
Influence of Nanoscale Structural Heterogeneity on Shear Banding in Metallic Glasses
Intermediate Temperature Brittleness in Metallic Glasses
Isochronal Crystallization Kinetics of Fe – Based Amorphous Alloy Powder
Linking Macroscopic Rejuvenation to Nano-elastic Fluctuations in a Metallic Glass
Local Dynamics in Metallic Liquids Studied by Inelastic Neutron Scattering
Manipulating Structures and Mechanical Properties in Metallic Glasses
Manipulation of Plastic Flow in Metallic Glasses via Nanoscale Networks of Compositional Heterogeneities
Mechanically-induced Structural Rejuvenation by HPT Deformation in Zr-Cu-Al Bulk Metallic Glass
Mixed-mode Fracture Studies of Plastic Bulk Metallic Glass
Nanoglass: An Alternative Path to Harden and Toughen Metallic Glasses by Spatial Patterning of Heterogeneities
Nanostructure Characterization and Fracture Toughness Properties of a Thermomechanically Processed Zr-based Bulk Metallic Glass
On Quantifying Amorphous to Crystalline Phase Transition during Micro Milling Zr-based Bulk Metallic Glasses
On the Effect of Sample Size on the Fracture Toughness of Bulk Metallic Glasses
Probabilistic Modelling and Simulation of Microstructural Evolution in Zr Based Bulk Metallic Glass Matrix Composites during Solidification
Progress and Challenges Associated with the Development of Spacecraft Gearboxes Utilizing Bulk Metallic Glasses
Property Enhancement of BMG Based Nanoglasses Prepared by RF Sputtering of Thin Films and High Pressure Torsion
Relationship between STZ Properties, Beta Relaxation and Ductility of Metallic Glasses
Research on the Deformation Behaviors and Shear Band Multiplication of Bulk Metallic Glasses
Research on the Thermoplastic Formability of Lightweight Ti-based Bulk Metallic Glasses
Selective Laser Melting of Bulk Metallic Glass
Shear-band Thickness and Cavitation in a Zr-based Metallic Glass
Short-term Oxidation Behavior of Zr53.8Cu29.1Ni7.3Al9.8 Bulk Metallic Glass at High Temperature in Dry Air
Solid State Joining of AMZ4 Bulk Metallic Glass to Crystalline Alloys by Power Ultrasonics
Spark Plasma Sintering of Ni Reinforced Fe Based Bulk Metallic Composites
Spatial Correlation of Elastic Heterogeneity Tunes the Deformation Behaviors of Metallic Glasses
Spatio-temporal Correlation in Rheology of Metallic Glasses
STEM RDF Mapping as a New Approach to Characterize Local Structural Variations in Metallic Glasses
Strain Delocalization and Fracture Behaviors of Laminated Metallic Glass Composites
Strengthening and Toughening via Phase Separation and Beta Relaxation in Zr-based Bulk Metallic Glasses
Stress Measurements on Colloidal Crystals and Glasses
Structures and Dynamics in Ni-Nb System via Combinatorial and High-throughput Methods
Surface Properties of Thin Film Metallic Glasses Produced by Physical Vapor Deposition
Synthesis and Processing of Roll-bonded Metal/ Metallic Glass Laminated Composites
Tailoring Crystallization Pathways of Metallic Glass Nanorods via Nucleus Starvation
Temperature Dependent Plastic Deformation of Bulk Metallic Glasses
The Atomistic Simulation of Stress Relaxation and Creep in a Model Binary Amorphous Solid
The Mechanism of Free-volume Concentration by Controlling Shear Bands in Bulk Metallic Glasses
The Shape of the Liquid Metastable Miscibility Gap in Undercooled Molten Pd-Ni-P Alloys
Theoretical Analysis of Shear-band Arrangements in Notched Bulk Metallic Glasses
Thermodynamic Prediction of Novel Glass Forming Compositions in Zr-Co-Ti and its Bio-corrosion Studies
Thermomechanical Heterogeneities in Shear Banding Dynamics in Metallic Glasses
Thin-film Metallic Glass with Ultra-high Plasticity under Shearing and Nanoindentation at Room Temperature
Tracking Metastable Phase Selection during Devitrification in a Metallic Glass
Tuning Metallic Glass Characteristics via Manipulating Icosahedral Order and Packing Density
Unique Crystallization Dynamics by Flash DSC in Zn-based Metallic Glass
X-ray Diffraction Studies of the First-order Liquid-liquid Phase Transition in Undercooled Molten Pd-Ni-P

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