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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Mechanical Behavior at the Nanoscale VI
Presentation Title Nanostructured Metallic Glasses from Colloidal Nanoparticles
Author(s) Melody Wang, Wendy Gu, Mehrdad Kiani
On-Site Speaker (Planned) Melody Wang
Abstract Scope Metallic glasses possess superior mechanical properties, but often deform via shear bands leading to near-zero ductility. To overcome this issue, we use iron boride amorphous nanoparticles made via colloidal synthesis to form bulk nanoglasses, which are analogous to nanocrystalline materials except with amorphous grains and grain boundaries. The individual nanoparticles are compressed in an SEM, and stress-strain curves and videos show that ductile deformation occurs through the slow formation of multiple cracks. We compact nanoparticles into millimeter sized nanoglasses and measure elastic modulus and hardness values of up to 160 GPa and 8 GPa, respectively, via nanoindentation. TEM is used to characterize the amorphous grains and interfaces. Large (~12 um) nanoglass micropillars are compressed and found to have plastic strain of 3.5%, which is higher than most iron-based glasses that are brittle. We relate this plasticity to deformation at the amorphous interfaces. The effect of nanoparticle size is also explored.
Proceedings Inclusion? Planned:
Keywords Other, Mechanical Properties, Other

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Achieving Micron-scale Plasticity and Theoretical Strength in Silicon
Analyzing Lamellar Level Correlations between Mechanical Behavior and Composition in Mouse Bone
Atomistic Mechanism of Stress Modulated Phase Transition in Monolayer MoTe2
Competing Behavior of Slip and Fracture on the Nanomechanical Response of Pharmaceutical Materials
Correlation of Crack Propagation with Mechanical Properties of Parent Phases and Softened Phases in Bearing Steels under Rolling Contact Fatigue
Deciphering the Deformation Mechanisms of Nanocrystalline-nanotwinned Metals in Hall-Petch Breakdown Regime
Deformation Twins in BCC Metals - Atomic Level Origins
Development of Neural Network Potential for MD Simulation and Evaluation of Mechanical Property
Direct Measurement of Adhesion for Noble-metal Nanoparticles Using In Situ Transmission Electron Microscopy
Direct Observation of Intermittent Dislocation Motions and Deformation Mechanisms in Nanocrystalline Molybdenum
Dynamic Recrystallization-induced Strengthening in Amorphous-nanocrystalline Silver-nickel Nanolaminates
Fracture of Two-dimensional Materials
Grain Size Dependent Deformation Mechanisms in Complex Concentrated Oxides (Co,Cu,Mg,Ni,Zn)O
H-12: Atomistic Modeling of the Mechanical Behavior of Gradient Nanoglasses
H-13: Dynamic Mechanical Properties of High-entropy Alloys
Impact of Hydrogen on Dislocation Nucleation and Strength in bcc Fe-Cr Alloys
In Situ Atomic-scale Observation of Surface-diffusion-controlled Softening in Metallic Nanocrystals
In Situ Nanomechanical Testing to Understand the Role of Grain Boundary Structure in Materials
In Situ Nanomechanics of Deformation Twinning
In Situ Nanoscale Mechanical Testing to Isolate the Effect of Grain Boundary and Linear Complexions
Investigating Role of Interfaces on Deformation Behavior of Metallic Nanolaminates Using Dislocation Dynamics Simulations
Ligament-size Effect of Time-dependent Plasticity in Nanoporous Gold under Controlled Surface Coated Layer
Mechanical Behavior and Microstructure Evolution in a Nanocrystalline Tri-immiscible Alloy
Mechanical Behavior of Free-standing and Matrix-embedded Metallic Nanoparticles at Different Temperatures
Mechanical Behavior of Nanotwinned Al Alloys at Elevated Temperatures
Mechanical Behavior of Optimized Transparent Nanomultilayers
Mechanistic-design of Multilayered Metal-metal and Metal-ceramic Nanocomposites for Tunable Strength and Toughness
Mechanistic-design of Multilayered Nanocomposites: Hierarchical Metal-MAX Materials for Tunable Strength and Toughness
Micro-mechanical Characterization of Geometric and Defect Dependent Responses in 3D Kirigami Polymer Structures
Molecular Dynamics Modeling of Helium Nanobubble Growth in Irradiated Copper Matrix
Molecular Dynamics Simulations on Nanosuspension Droplet Impact
Nano-mechanical Behavior Associated with Dislocation-boundary Interaction Characterized though Nanoindentation and TEM In-situ Straining
Nanoscale Characterization of Electrochemical-mechanical Mechanisms with Electron Microscopy
Nanostructured Metallic Glasses from Colloidal Nanoparticles
NOW ON-DEMAND ONLY – Atomistic Simulation of Amorphous/Crystalline Metal Composite Interface Mechanical Behavior by Nanoindentation
NOW ON-DEMAND ONLY – Measuring and Understanding Nanoscale Adhesion and Deformation Using Iin Situ Experiments in a Transmission Electron Microscope
On the Nanoscale Mechanics of Basal Dislocations in MAX Phases: Atomistic Modeling of Structure and Mobility
Orientation Dependence of Strength and Ductility in Nanolaminates Containing Interfaces with Three Dimensional Character
Precipitate Looping and Shearing at the Nanoscale
Precipitation Hardening in BCC Multilayer Thin Films
Strain-rate Dependent Deformation Mechanisms in Multilayer Cu/Mo Thin Films
The Complexity of Deformation Twinning
The Effects of Grain Boundaries on the Micromechanical Properties of Transparent Nanocrystalline Spinel
The Evolution of Deformation Twinning in a Heterogeneous Planar Fault Energy Landscape
The Role of Thin Film Architecture to Enhance Fracture Resistance
Theoretical Development of Continuum Dislocation Dynamics with Reactions: Preliminary Results
Thermal Stability of Nanocrystalline NiYZr Alloys
Tribochemical Formation of Diamond-like Carbon Films on Catalytically-active Noble Alloys
Tuning the Fracture Toughness of Polymer-infiltrated Nanoparticle Films via Nanoconfinement
Understanding the Local Structure-property Relationships of Pb-Sn Solders in Terrestrial vs. Microgravity Environments
Understanding the Role of Surface Faceting in Metallic Nanoparticles via In Situ TEM Compression
Visualizing Nanoscale Contacts In Situ: History-dependent Adhesion of Si-Si and MoS2-MoS2 Interfaces

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