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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Deformation and Transitions at Interfaces
Presentation Title Accounting for the Micromechanical Effect of Grain Boundaries Using a New FFT-based Strain-gradient Polycrystal Plasticity Formulation
Author(s) Ricardo Lebensohn, Alan Needleman
On-Site Speaker (Planned) Ricardo Lebensohn
Abstract Scope In this work we present a novel implementation of Gurtin's strain-gradient polycrystal plasticity theory to study the micromechanical effect of grain boundaries (GBs). Bittencourt et al's (2003) non-local formulation has been incorporated in Lebensohn et al's (2012) EVP-FFT algorithm. Numerical procedures for the accurate estimation of higher-order derivatives of micromechanical fields, required for feed-back into single crystal constitutive relations, are identified and applied. A simple case of a periodic laminate is used to assess the numerical stability of the algorithm and to study the influence of the different model parameters. The new formulation is next applied to the case of a 3-D fcc polycrystal, accounting for non-local effects associated with GBs and illustrating the possibilities offered by the proposed numerical scheme to accurately solve large problems in reasonable computing times.
Proceedings Inclusion? Undecided


A Computational Study of the Deformation Response of Cu/Nb Multilayer Composites
A Concurrent Atomistic-continuum Study of Sequential Slip Transfer of Curved Dislocations across Grain Boundaries
A Mesoscale Model of Grain Boundary Faceting: The Role of Facet Junctions
A Micro-Compression Test Study of Grain Boundary Sliding
A Non-local Continuum Mechanics Treatment of the Dynamics of Interfaces
Accounting for the Micromechanical Effect of Grain Boundaries Using a New FFT-based Strain-gradient Polycrystal Plasticity Formulation
Alloy Stabilization of Nanocrystalline Grain Structures: Case Study of Pt-Au
Atomic-Scale Studies of Defect Interactions with Homo- and Heterophase Interfaces
Atomistic Simulation Algorithm for Studying Dislocation Glide Loop – Grain Boundary Interactions in Aluminum
Atomistic Simulations of Transient Testing in Nanocrystalline Al
Atomistic Study of Fundamental Character and Motion of Dislocations in Intermetallic Al2Cu
Blocky Alpha Grain Growth in Zircalloy4
Complexion Transitions in Metals: Unique Opportunities for Mechanical Behavior and Materials Processing
Correlating Dislocation Configurations to Deformation Behavior in Cyclically Deformed Additive Manufactured IN718
Criteria for Grain Boundary Dislocation Nucleation on Different Slip Systems Obtained by Atomistic Simulations
Crystallographic Rotation, Deformation, and Damage
Deformation at Grain Boundaries and Triple Junctions in Oligocrystalline Nickel
Deformation Mechanisms of Single and Polycrystalline Zirconia Nanopillars
Development of Long-range Crystallographic Correlations in Microstructures
Dislocation/Boundary Interaction in Titanium: Molecular Dynamics Study
Early Stages of Microstructure and Texture Evolution during Beta Annealing of Ti-6Al-4V
EBSD Observations of Deformation at Grain Boundaries
Effects of Materials and Processing Parameters on the Roughness of Recrystallization Boundaries
Electric Field Effects on Grain Boundary Formation and Grain Growth
Exploring the Role of Texture, Grain Boundary Character, and Grooving on Grain Growth in Metallic Thin Films
Grain Boundaries, Disorder, and Mass Transport in Complex Oxides
Grain Boundary-Mediated Deformation Mechanisms Accommodating Mechanical Grain Growth in Nanocrystalline Metals
Heterogeneous Deformation in Polycrystalline Mg-Y by In Situ 3D-XRD
Hydrogen Embrittlement and Grain Boundary Fracture in Nickel: A Perspective from Atomistic Simulations
Imaging and Analyzing Slip in Three Dimensions
In-situ Probe of Twinning Dynamics at a Tensile Twin Tip in Mg
Influence of Dislocation Density on Plastic Deformation near Grain Boundary in Alpha-titanium Studied by Nanoindentations and Modeling
Influence of Grain Boundary Structure and Character on the Deformation Mechanisms of Grain Boundaries
Influence of Grain Boundary Transport on Transient Oxidation
Influence of Twin-grain Boundary Interactions on Further Twin Growth and Twin Transmission in HCP Metals
Interface-Mediated Twinning in Small-Scaled BCC Bi-crystals
Intergranular and Transgranular Fracture Modes in H.C.P. Alloys
Intrinsic Scale Effects in Metal Deformation
Investigating Deformation at Grain Boundaries by SEM-DIC
Investigation of Dislocation Activities during Slip Transmission across Alpha/Beta Interface in Ti-alloy Using Microscopic Phase-Field
Investigation of Slip Transfer across Grain Boundaries with Application to Cold Dwell Facet Fatigue
Investigations on the Origin of Crack Initiation and Propagation Susceptibility of Prior Austenite Grain Boundaries in DP and Martensitic Steels
Kinetic Monte Carlo Simulations of Grain Boundary Kinetic Events
L-43: A Hybrid Fast Fourier Transform Based Elasto-Viscoplastic Formulation
L-44: Dislocation and Twin Interactions with Specific Ag/Cu Interfaces
L-45: Controlling the Deviation of Twins in Inconel 600 Alloy by Hot Rolling
L-46: Correlation of Bendability of CuAg Conductors with Their Tensile Properties
L-47: Deformation Mechanisms in Ti/TiN Multi-layered Thin Films
L-48: Development of Synthetic Driving Force Methods in HCP Crystals and Comparison to Existing Techniques
L-51: Effect of Deformation Heterogeneity of TWIP Steels on Near Boundary Twinning Behavior Using Crystal Plasticity Simulation
L-52: Effect of Electric Fields on Grain Boundary Characteristics in Ceramics
L-53: Grain Boundary Mechanisms in Nickel-based Superalloys
L-55: In-situ EBSD Study on Recrystallization Nucleation in Deformed Al
L-56: Influence of Deformation Processing on the Superelastic Behavior of NCAXB Alloys
L-57: Interaction of Grain Boundaries with Nano-clusters in Immiscible Alloys
L-58: Interface Controlled Work Hardening Ability in Ultrafine-grained Ti-6Al-4V Alloy with Bimodal Microstructure
L-59: Mechanical Characterization of Ti-6Al-4V Titanium Alloy at Multiple Length Scales Using Spherical Indentation Stress-strain Measurements
L-60: Non-uniform Magnetostress in Magnetic Shape-memory Alloys
Mechanical Characterization of Grain Boundary Regions Using Spherical Nanoindentation
Mesoscale Modeling of the Influence of Microstructural Gradients on Fracture
Mesoscale Response of Titanium Alloy Tensile Samples Measured through High Energy X-ray Experiments
Microstructure and Mechanical Behavior of HCP/BCC Bulk Nanolaminate Composites produced by Accumulative Roll Bonding
Multi-probe, Multi-scale Analysis of Plasticity and Crack Blunting at Lath Martensitic Boundaries
Nanoscale Strain Mapping at Interfaces Using Scanning Nanobeam Electron Diffraction
New Insights into Plasticity at Grain Boundaries by Nano- and Micromechanics
Non-Arrhenius Grain Growth, Interfacial Complexion Transitions and the Grain Boundary Character Evolution in SrTiO3
Observation and Characterization of Grain Boundary Complexions in Hot-pressed Boron Carbide
Phases and Phase Transformations at Interfaces
Plastic Recovery Driven by Interfaces
Polycrystalline Plasticity Simulations with Anisotropic Discrete Dislocation Dynamics
Quantification of Dislocation Behavior and Deformation Twinning at High Strain Rates
Quantifying Structure-Property Relationships of Grain Boundaries and Interfaces at the Atomic Scale for Design of Polycrystalline Materials
Quantifying the Dislocation Emission Process from Grain Boundaries with Traction Fields
Residual Stress and Dislocation Density Distributions near Grain Boundaries in Deformed Materials
Role of Grain Boundary Sliding in Deformation of Polycrystalline Materials
Segregation of Lead and Hydrogen Isotopes to Grain Boundaries in Nickel and Their Effect on Fracture
Slip-induced Twinning in Ti
Stabilization of Nanocrystalline Alloys at High Temperatures via Utilizing High-entropy Grain Boundary Complexions
Statistical Analysis of Grain Boundary Structure-Property Relationships
Stresses in Reverse-deformed Single Crystal Cu: Quantitative Tests of the Composite Model
Strong Nonlinear Increase in the Yield Strength Due to Solute Segregation at Grain Boundaries in FCC Nano-crystalline Metals
Structure and Dynamics at the Cathode/Electrolyte Interfaces in Li-S Batteries
Structure of Semicoherent U-Zr Interfaces.
Studying the Mechanical Response of Regions within Grains and Near Grain Boundaries Using Spherical Nanoindentation
The Atomic Level Structure and Chemistry of Interfaces Between Iron and Cementite
The Development of Physically Based Atomistic Microstructure: The Effect on the Mechanical Response of Polycrystals
The Effect of Interface Elastic Fields on Interface Sink Strengths
The Effect of Microstructure on Strain Localisation in Two-phase Ti-alloys
The Impact of Irradiation Dose Rate and Temperature on Grain Structure Evolution in Nuclear Fuel
The Influence of Second-phase Distribution on Dynamic Damage and Spall Strength
The Nature of Grain Boundaries and Their Response to Shock Compression and Release in Tantalum
The Role of Collective Atomic Motion on Interface Migration and Deformation
The Role of Interfaces in Nucleation of Dynamic Damage in FCC and BCC Materials
The Zero-energy Grain Boundary and Consequences to Grain Growth
Transformation, Deformation and Special Grain Boundary Generation – Theoretical Analysis and Phase Field Simulations
Virtual Diffraction of Grain Boundaries: Characterize, Optimize, and Drive Motion
Void Nucleation and Growth at Grain Boundaries in Flat and Surface Perturbed Copper Bicrystals
{1012} Twin Faceting on Non-tilt Interfaces

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