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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Mechanical and Creep Behavior of Advanced Materials: A SMD Symposium Honoring Prof. K. Linga Murty
Presentation Title On Dislocation Patterning in Deformed Crystals
Author(s) Anter El-Azab
On-Site Speaker (Planned) Anter El-Azab
Abstract Scope We present a continuum dislocation dynamics model for mesoscale plasticity that predicts the formation of dislocation cell structure in fcc crystals under tensile loading, in conjunction with the similitude law for the dependence of cell size on stress. This model features dislocation transport equations coupled with crystal mechanics, plus a closure problem consisting of finding the spatial and temporal correlations of the dislocation system. This approach has been used to obtain a full solution of the deformation problem, including the dislocation and deformation patterns, internal elastic fields, and stress-strain response. The results reveal the critical role of cross slip in cell structure formation under monotonic loading, and the relative suppression of this role when cyclic loading is applied. The dependence of dislocation patterns on loading axis will be presented and discussed. This work was performed in collaboration with Shengxu Xia (Purdue University).
Proceedings Inclusion? Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)


A Rate Theoretic Approach to Modeling Irradiation Creep
Anisotropy and Creep Mechanisms during the Hot Forming of Light Alloy Sheet Materials
Application of Phase-field Approach in Deformation-induced Microstructure Evolution
Applying Conventional Creep Mechanisms to Ultrafine-grained Materials
Atomistic Simulation of Radiation Effects in FeCr-based Cladding
Compatibility of a Complex Concentrated Alloy with Non-aqueous Coolants
Correlating Variability in Fatigue Life with Fracture Mechanisms in a Near-α Titanium Alloy
Creep and Creep Fatigue of Alloy 709 Using In situ Heating during SEM and EBSD Observation
Creep Behavior of a Microstructurally Stable Nanocrystalline Alloy
Creep of Dispersion Strengthened Materials – Emergence of Paradigms Challenging the Old Theories
Creep of Zirconium and Zirconium Alloys
Creep, Deformation and Fracture Studies of Materials for Various Technologies in the Nuclear Materials Research Group at NC State
Cyclic Deformation Behavior of Modified 9Cr–1Mo Steel at Elevated Temperatures
Deformation and Fracture Behavior of Irradiated and Nonirradiated Austenitic Stainless Steels
Design of Creep-resistant Copper Alloys
Development of Creep-Resistant Austenitic Stainless Steels for High Temperature Applications
Digital Stress Imaging in Mesoscale Microstructure Dependent Deformation Visualized Using Nano-mechanical Raman Spectroscopy: Role of Initial Manufacturing Originated Residual Stresses
Dynamic Behavior of a Nanocrystalline Cu-Ta Alloy
Effect of Dynamic Strain Aging on Creep in Titanium Alloys
Effect of Mo and Bi Additions on the Microstructure of Zr-Cr-Fe Alloy after β-quenching
Effect of Thermo-mechanical History on the Creep Behavior of Sn-Ag-Cu Solders
Emulating Neutron Damage in Nanocrystalline Copper via In-situ Ion Irradiation
Enhanced Radiation Tolerance of Single Phase Solid Solution Alloys
Environmentally-benign Pb-free Solder Alloys: Complex Load Bearing Materials in Electronic Packaging
Fracture Behavior and Grain Boundary Sliding during High-temperature Low-stress Deformation of AZ31 Magnesium Alloy
Fundamental Discovery of Q-phases and Direct Conversion of Carbon into Diamond and h-BN into c-BN
Fundamentals of Creep in Aluminum Over a Very Wide Temperature Range
Helium Hardening in Interface-dominated Metallic Composites
High Temperature Behavior of Zirconium Alloys in Air
In-situ TEM Observation of the Peculiar Movement of Dislocations in Mg
In Situ Neutron Diffraction Studies of Crystallographic Texture at Stress and Temperature with Implications for Training Shape Memory Alloys
Increasing the Elevated-temperature Strength of a Beta Titanium Alloy through Thermomechanically-induced Phase Transformation
Indentation Probes for Measurements of Localized Materials Properties
Influence of Fine Scale Alpha Precipitation on the Mechanical Properties of the Beta Titanium Alloy Beta-21S
Irradiation Creep of Zr-Alloys
L-114: Effects of Blade Curvature on Fatigue Life of Nickel-based Single Crystal Structures with Film-cooling Holes
L-115: Understanding of Microstructure and Mechanical Properties of Friction Stir Processed Aluminum-bearing High-Chromium Ferritic Stainless Steel
L-116: In Situ Investigation on the Micromechanical Behavior of the CuZr-based BMGC by Neutron Diffraction
L-117: Mechanical and Creep Behavior of EPDM
L-118: High Temperature Tensile Properties and Related Microstructural Evolution of Grade 92 Steel
L-119: Mechanical Properties and Serrated Flow in Al-bearing, High-Cr Accident-tolerant Ferritic Steel
L-120: Spherical Nanoindentation Creep Behavior of Indium at Room Temperature
Mechanical and Microstructural Effects of Thermal Aging on Cast Duplex Stainless Steels by Experiment and Finite Element Method
Mechanisms Governing the Creep Behavior of High Temperature Alloys for Generation IV Nuclear Energy Applications
Microstructure-property Interrelationships in Metastable Beta Titanium Alloys with Refined Distributions of the Alpha Phase
Microstructure, Texture and Mechanical Properties of the 14YWT Nanostructured Ferritic Alloy NFA-1
Modelling of the Fracture of Precipitate and Austenitic Matrix Interfaces During Creep
Molecular Dynamics Simulations of Dislocation – Obstacle Interactions
Multiaxial Creep and Creep-fatigue
On Dislocation Patterning in Deformed Crystals
On the Creep Behavior of Dual-Scale Particle Strengthened Nickel Based Alloy
On the Origin of the Sink Efficiency of Grain Boundaries under Irradiation
Precipitate-dislocation Interaction Mediated Portevin-Le Chatelier-like Effect in a Beta-stabilized Ti-Mo-Nb-Al Alloy
Radiation Response of Nanotwinned Metals
Role of Structural Defects on the Magnetostriction of α-phase of Fe-based Alloys
Spherical Nanoindentation Stress-strain Curves
Structure-property Correlations in Metallic Components Synthesized Using Selective Laser Melting
Structure-property Relationships in Steel Fibers
Study of Accelerated Creep Behaviour of Zr-2.5Nb Pressure Tubes
Study of High Temperature Deformation Behavior of Graded Transition Joints (GTJs) (Relevance to Nuclear Power Plant Components)
Surface Finish Effects on Fracture Behavior of Sn-4Ag-0.5Cu Solder Joints
Synergistic Effects of Neutron Irradiation and Interstitial Nitrogen on Strain Aging in Ferritic Steels
TerraPower HT9 Mechanical and Thermal Creep Properties
The Creep-resistant High Entropy Alloys (HEAs)
The Enhanced Radiation-resistance of Ultrafine-grained Metals Produced by SPD Processing
The Microstructural Evolution of Hot Deformed Ti-IF Steel
The Representation of Grain Boundary Texture Using Hyperspherical Harmonics
The Wigner Energy Spectral Fingerprints of Radiation Damage

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