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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Mechanical Behavior of Nanostructured Materials
Presentation Title In-Situ Electron Microscopy of Fracture and Flow
Author(s) Bahne Kapelle, Andreas Kelling, Florian S, Cynthia A Volkert
On-Site Speaker (Planned) Cynthia A Volkert
Abstract Scope Deformation and fracture are complex and highly non-equilibrium processes which determine the strength of materials. Gaining insights into the mechanisms controlling these dynamic processes requires dynamic methods such as in-situ electron microscopy, which allows observations at length scales down to Angstroms and times scales between 0.1 seconds and several hours. I will present studies on tensile loading of high quality Au nanowires using in-situ testing in the TEM and the SEM, where deformation is controlled by surface nucleation of dislocations. A comparison with classical nucleation theory reveals both agreement as well as some fundamental contradictions which I will discuss. I will also present our in-situ studies on crack propagation in polycrystalline and single crystalline Ti, where we can directly observe the plastic zone and crack path in the TEM. By relating the crack propagation to the strain energy release rate, we gain understanding of the features controlling toughness.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


15 Years SPD-Processed Bulk Nanostructured Materials: From Mechanical to Functional Highlights
Achieving Enhanced Room Temperature Ductility in Bulk Nanostructured Mg
Back-stress Strengthening and Strain Hardening in Heterogeneous Materials
Brittle-to-ductile Transition in Metallic Glass Nanowires
Comparing Amorphous Alloy Synthesis Employing Melt Spinning & Mechanical Alloying
Computational Studies of Materials Properties at the Nanometer Scale
Correlation between Nanostructuring and Precipitation in Age-hardened Aluminum Alloys
Correlation between Nanotwin Density and Texture Transformation in Thin Ag Films
Dependence of Shear Mixing on Alloy Properties: A Study on Cu-X-Mo Ternary Alloys
Development of Age-hardenable Nanolamiate Thin Films
Deviations from High-Entropy Configurations in the AlxCoCrCuFeNi Alloys
Effects of Ultrafine Grain Structure on Al Alloy Response to Corrosive Environments
Electromechanical Coupling Enhanced by Polar Nanoregion Vibrations
Enhanced Thermal Stability of Ultrafine-grained Aluminum Fabricated by Applying a Fast Cooling Rate after Hot Rolling
Evidence that Abnormal Grain Growth Precedes Fatigue-crack Initiation in Nanocrystalline Metals
Experimental Observations of the Mechanical Behavior of Nanocrystalline Thin Films
Exploring Nanoindentation Induced Stress Field Propagation in Nanoporous Thin Films
Gradient Nanostructure and Mechanical Behavior of Ultrasonic Shot Peened Ti-6Al-4V
Grain Boundaries Shear-migration Coupling and Its Impact on Plastic Deformation in Nanocrystalline Metals
Grain Size or Film Thickness? Influence of the Two Main Length Scale Parameters on the Mechanical Reliability of Polymer-supported Metal Films
Hardening by Annealing and Abnormal Hall-Petch Relationship in Nanocrystalline Elements and Alloys
Hierarchical Structure and Strengthening Mechanisms in Pearlitic Steel Wire
High Temperature Mechanical Properties of Ultrafine-grained and Nanocrystalline Materials
In-Situ Electron Microscopy of Fracture and Flow
In Situ Synchrotron X-ray Studies on the Deformation Mechanism of Carbon-steel/Copper Nanocomposites
Influence of Severe Plastic Deformation on the Local Deformation Behavior of Nanostructured Metals under Extreme Conditions
L-121: Cyclic Response of Friction-stir Processed Ultra-fine Grained Copper
L-122: Projectile Induced Deformation Twinning in Nanocrystalline Aluminum
L-123: Aluminum with High Modulus and Superior Strength by Self-Dispersed TiC Nanoparticles
L-124: Multiscale Modeling of Deformation Behavior in Metal/Ceramic Mmultilayer Nanocomposites
L-125: Competition between Slip and Martensitic Transformation of Retained Austenite in Carbon-steel/Copper Nanolaminates
L-126: The Influence of Glassy Phase on the Crack Healing Efficiency of Silicon Carbide/Spinel Ceramic
L-128: The Thermal Stability of Cryomilled 5083 Aluminum Containing Diamantane Nanoparticles
L-129: Dynamic Behavior of Ultra High Molecular Weight Polyethylene Reinforced with Ceramics Nanoparticles at High Strain Rates
L-130: Molecular Dynamics Study of the Creep Behavior of Metallic Glasses and Glass-composites
L-131: Dislocation Engineering in Novel Nanowire Structures
L-132: An Experimental Investigation of Deformation Mechanisms in FCC Thin Films
L-133: Impact of Heat Treatments at Varying Temperature on the Strength and Ductility of Nanotwinned Inconel
L-134: Mechanical Characterization of fcc and bcc Metals by Extraction of Nanoindentation Stress-strain Curves
L-135: Multi-stages Spiral Twist Extrusion: A Novel Severe Plastic Deformation Technique for Bulk Nanostructured Materials
L-136: Superelasticity, Micaceous Plasticity and Size Effects of Novel Intermetallic Compound CaFe2As2 At Small Length Scales
L-138: Manipulating the Grain Boundary Structure of an Ultrafine Grained Cu-Zr Alloy to Enhance Strain Hardening Capability and Strength
L-139: Enhanced Mechanical and Electrical Properties of Nanocrystalline Cu Matrix Nanocomposite with In-situ Formed NbC Nanoparticles
L-140: Effects of the Angle between Micro-crack and Loading Direction on Crack Propagation of Single Crystal γ-TiAl Alloy
L-141: Tensile Properties of Perovskite in Flexible Solar Cells
L-142: Fabrication and Characterization of Aluminum-carbon Nanotubes (Al-CNT) Functionally Graded Cylindrical Composites
L-143: High Strength and High Conductivity Wires Made from Cu-Ag Alloys Designed for the Construction of High Magnetic Fields Generators
L-144: Mechanical Characterization of Cold Sprayed Aluminum Alloy Using Micropillar Compression
L-145: Development and Characterization of Sputter Deposited Nickel-molybdenum-tungsten Thin Films for High Temperature Metal MEMS Applications
L-146: Mechanical Behavior of Sub-micron-sized Nanocrystalline Pillars under Monotonic and Cyclic Loading
L-147: Nanoindentation Response of Fe-10%Cr Structures with Voids: An Atomistic Study
L-148: Preparation and High Temperature Deformation of Nanocrystalline MgO
L-149: Solute Atoms Enhance Tensile Ductility in a Nanostructured Al-Mg Alloy
L-150: Strong, Ductile, Thermally Stable Cu-based Metal-intermetallic Nanostructured Alloys
L-151: Synthesis of Bulk Single-crystalline Quasicrystal Approximant YCd6 and Its Small-scale Mechanical Properties
L-152: Flexibility of Perovskite LED Based on Mechanical Properties of Component Materials
L-153: The Influence of Severe Plastic Deformation on the Fatigue Crack Growth Behavior of Pure Metals and Alloys
L-154: The Precipitation and Strengthening Behavior of Ultrafine Structured Al-7wt%Si-0.3wt%Mg Alloy
L-155: Towards an Understanding of Shear Band Formation in Nanocrystalline and Ultrafine-grained Single Phase Materials
L-156: Effect of Annealing Temperature on Texture Transformation in FCC Thin Films
L-157: Anisotropy of Solute Effect on Dislocation Slip in an HCP Metal: A Molecular Simulation Study of Mg Alloys
L-158: A Study on Growth Nanotwins for CuZn Synthesized by Electrodeposition and Magnetron Sputtering
L-159: Atomistic Simulation of Creep Deformation in Metallic Nanoglasses
L-160: Effects of the Processing Variables on Microstructural Homogeneity Manufactured by High Pressure Double Torsion
L-161: Grain Growth in Nanostructured Materials during Cyclic Loading: Is the Description Complete?
L-162: Microstructural Influences on the Transition to Drag Dominated Dislocation Motion at High Rates of Strain
L-164: Effect of High Temperature Annealing Time and Temperature on Microcrack, Micro-nanostructures and Mechanical Properties of a 14YWT Nanostructured Ferritic Alloy
L-165: Microstructure and Mechanical Behavior of Nanostructured FeMn Bioresorbable Alloy
L-166: Stress-driven Microstructural Evolution and Grain Boundary Doping in Nanocrystalline Alloys: A Direct Link Revealed by Quantitative In Situ Electron Microscopy
L-168: Surface Rebound of Relativistic Dislocations Directly and Efficiently Initiates Deformation Twinning
L-169: Thermal Stability and Mechanical Behaviour of Electrodeposited Nanocrystalline Iron
L-170: Twinning-dominated Deformation in Body-centered Cubic Tungsten Nanowires
L-171: UV Light, Temperature and Humidity Effects on the Mechanical Behavior of Nanocomposites
Mechanical Alloying by Severe Plastic Deformation
Mechanical Behaviors of Gradient Nanostructured Materials
Mechanical Properties and Microstructure Stability in Fe-Cr base Alloys for Nuclear Energy Applications
Mechanical Properties and Thermal Stabilization of Nanocrystalline Aluminum and Aluminum Alloys
Mechanical Properties of Aluminum Composites with Nano Alumina Reinforcement
Mechanical Properties of Nanotwinned Al
Microstructure and Mechanical Behavior of ECAP and HPT Processed Austenitic and Ferritic-martenstic Steels
Microstructures and Mechanical Properties of Nanostructured and Ultrafine Grained Al Alloy and Cu Matrix Nanocomposites Fabricated by Thermomechanical Powder Consolidation
Nanostructured Ferritic Steels: Synthesis, Microstructure and Mechanical Properties
On the Relationship between the Grain Boundary Character and the Microhardness in Nanocrystalline Ni-W
Processing and Properties of Nanostructured Metallic Systems
Strain Delocalization and “Ductile” Fracture Behaviors of Metallic Glass
Strength and Deformation of Far-from-Equilibrium Metallic Systems at the Nano-scale: High-Entropy Alloys and Metallic Glasses
Structure Dependent Creep Behavior of CuNb Nanolaminates
Study of Dynamic Recovery in Nanocrystalline Metals Using In-situ X-ray Diffraction and MD Simulations
Suppressing Oxide Nanoparticle Coarsening and Cu Nanograin Growth in Nanostructured Cu Matrix Nanocomposites by Adding Ti
Tailoring the Mechanical Behavior of Metallic Glasses
The Effects of Solutes on the Tensile Strength of Nano-twinned Ag Thin Films at Various Temperatures
The Mechanical Behavior of Highly Oriented, Nano-layered HCP/BCC Composites
Thermal Stability and Grain-boundary Segregation in Al-Alloy Thin Films
Toward Quantitative 3D Microstructure-property Relations in Nano- and Poly-crystalline Materials
Twinning in Small-scaled BCC Crystals
Ultrahigh-strength Nanostructured Magnesium Alloys via Mechanical Alloying
Understanding, Controlling, and Creating Martensitic Phase Transformations in Nanostructured Polycrystals and Metamaterials
Universal Parameter to Quantitatively Predict Metallic Glass Properties

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