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Meeting 2015 TMS Annual Meeting & Exhibition
Symposium Multiscale Microstructure, Mechanics and Prognosis of High Temperature Alloys
Sponsorship TMS Materials Processing and Manufacturing Division
TMS Structural Materials Division
TMS: Computational Materials Science and Engineering Committee
TMS: High Temperature Alloys Committee
TMS: Mechanical Behavior of Materials Committee
Organizer(s) Mark Tschopp, Army Research Laboratory
Jeffrey L Evans, University of Alabama in Huntsville
Jonathan Cormier, ENSMA / Institut Pprime - UPR CNRS 3346
Qiang Feng, University of Science and Technology Beijing
Scope A number of critical applications in industry demand the use of high temperature alloys that can withstand various extreme environments under elevated temperature conditions. Reliably predicting the life of these components, which may be subjected to damage associated with creep deformation, cyclic loading, environmental degradation, and combinations thereof, is a challenging endeavor. Under these conditions, the state of the microstructure after processing and its evolution during service lead to damage mechanisms that manifest over multiple length scales, ranging from quantum and atomistic scales to the mesoscale to the macroscale.

This symposium will provide a venue for presenting recent achievements in understanding the microstructure evolution and mechanical behavior in high temperature alloys over multiple scales in order to ultimately predict the prognosis and life of components. Advances in experimental and computational capability have greatly improved our ability to understand and quantify deformation mechanisms in high temperature alloys. In particular, a goal of this symposium is to accelerate the development and acceptance of new methodologies for improving prognosis through understanding the fundamental relationships between material microstructure and mechanical behavior in these alloys. It is expected that this symposium will include talks ranging from atomistic, discrete dislocation, and continuum mechanics approaches for various length scales as well as experimental mechanics results that elucidate the behavior of these alloys.

The subject areas of this symposium include, but are not limited to:
• Multi-scale modeling of high temperature deformation and damage
• Single crystal and polycrystal plasticity models
• Deformation and damage based life prediction techniques
• Modeling and experimental approaches to creep-fatigue-environment interactions
• Discrete dislocation dynamics and mesoscale (phase field) modeling of creep deformation
• Experimental methods for materials prognosis and structural health monitoring
• Understanding and quantifying microstructure-property relationships at high temperature
• Computational and experimental approaches for accelerated materials design of high temperature alloys
• Effect of chemistry and processing on high temperature structure and properties
Abstracts Due 07/15/2014
Proceedings Plan Planned: A print-only volume

Discrete Dislocation Plasticity Simulations of Rate Effects with Solute and Vacancy Diffusion
Microstructural Evolution and Mechanical Behaviour of Ni Based Superalloy under High Temperature Deformation
Temperature Dependent Deformation Mechanisms Via Ab-Initio Methods
Ab Initio Study of the Effect of Solute Atoms on Vacancy Diffusion in Ni-Based Superalloys
Abnormal Stress Rupture Property in K465 Superalloy at 900℃
An Efficient Hybrid 2D/3D Thin Film Dislocation Model
An Investigation of Grain Boundary Character Evolution in Nickel 200
Application of External Field Treatment for the Microstructure Controlling of Nickel-Base Superalloy
Atomic Scale Modeling of High Temperature Deformation and Failure of FCC and HCP Metals
Atomistic Simulation of Shear-Behavior of γ/γ Interfaces in TiAl Lamellar Microstructures
Atomistic Simulations of Dislocation-Interface Interactions in the γ/γ’ Microstructure in Ni-Based Superalloys
C59: Experimental Study on the Behaviour of Welding Joints in Uniaxial Tension Using Digital Image Correlation
C60: Influence of Heat Treatment on γ'Phase and Property of a Directionally Solidified Superalloy
Contribution of Nano Twins and Precipitates to the Creep Behavior in Advanced Austenitic Stainless Steel
Coupling between Re Segregation and γ/γ′ Interfacial Dislocations during High-Temperature and Low-Stress Creep of a Nickel-Based Single Crystal Superalloy
Creep-Rupture Properties of Ni-Base Superalloy in Marine-Like Environment
Creep Deformation Mechanisms and HRSTEM EDS Mapping of Stacking Faults in L12-Containing Co-Base Superalloys
Creep Mechanism of a Ni-Co Based Wrought Superalloy with Low Stacking Fault Energy
Deformation Mechanism Maps for Grain Boundary Engineering of Ni-Base Superalloys
Descriptions of the Deformation Behavior and Properties of Hybrid Superalloys for Elevated Temperature Applications
Design, Synthesis, and Performance of γ' Ni3Al Bond Coats
Effect of Bi-Crystal Grain Boundary Angle on Stress Rupture Life of a Nickel-Based Superalloy
Effect of Notches on Creep-Fatigue Behavior of P/M Nickel-Based Disk Superalloy
Effects of Microstructural Degradation on Creep Behavior of GH4037 Wrought Superalloy
Experimental Investigation of Full-Field Deformations at the Microstructural Length Scale
Experimental Investigation on Plastic Strain and Recrystallization of Single Crystal Nickel Based Superalloy
Fatigue Properties and Acquisition of 3D Microstructural Data for Prediction of Crack Initiation and Early Crack Growth in Polycrystalline Superalloys
Grain Boundary Segregation and Creep Behavior in B and Zr-Containing Cobalt-Based Superalloys
High Temperature Oxidation and Hot Corrosion Behavior of Directionally Solidified Rene 80 Ni Superalloy
Hot workability and Deformation Behavior of the NiAl-Based Eutectics
Impact of Microstructure Evolutions on the Stress/Strain Distribution at Grain Boundaries in Ni-Based Superalloys
In Situ Study of Phase Transformations of a TiAl Alloy during Laser-Beam Welding
Influence of Ru on the Microstructural Evolution of Gamma Plus Gamma-Prime-Strengthened Co-Base Superalloys
Investigation of 3D Microstructural Compatibility during Ambient Temperature Deformation in a New Co-Hf Model Alloy
Local/Global Measurement of Primary Dendrite Arm Spacing in Single Crystal Nickel-Based Superalloys
Mechanical Behavior of a Notched Oxide/Oxide CMC in Combustion Environment: Experiment and Simulations
Microstructural Stability in High Refractory Containing Nickel-Base Superalloys
Microstructure Evolution during Al, Ti and Mo Surface Deposition and Volume Diffusion in Ni-20Cr Wires
Microstructure Evolution of a Platinum-Modified Nickel-Aluminide Coating under Thermo-Mechanical Fatigue
Modeling Precipitate Shearing in Superalloys
Modelling Creep in Single Crystal Superalloys
Modelling Creep Type IV Fracture in High Chromium Steel Welds
Multi-Scale Crystal Plasticity FEM Approach to Modeling Nickel-Based Superalloys
Multiscale Model of Strength in Single Crystal Tungsten under Uniaxial and Biaxial Loading
Ni-Based Superalloy Casting Parameters from Ab-Initio Molecular Dynamic Simulations
Porosity Evolution during High Temperature Creep Tests in a Single Crystal Superalloy by 3D X-ray Computed Tomography
Portevin-Le Chatelier Effect in a Ni-Co Base Superalloy
Predicting Fundamental Properties for Accelerated Materials Design of High Temperature Alloys
Real Time In Situ X-Ray Diffraction Study of the High Temperature Mechanical Behavior of a Rafted Single Crystal Superalloy
Recent Advances in Cast SX Superalloys
Recrystallization in Directionally Solidified Ni Based Superalloys
Rejuvenation of Nickel-Based Superalloys GTD444(DS) and René N5(SX)
Revealing the Role of Ternary Additions in High Temperature Shape Memory Phase and Microstructural Stability
Role of Oxygen on Mechanical Properties of High Temperature Materials: A QM/MM Study
Self-Healing of Creep Damage in Fe-Au Alloys at High Temperatures
The Effect of Local Texture and Plastic Strain Distribution on the Deformation Micromechanism in RR1000 Nickel-Based Superalloy
The Effect of Strain Distribution on Microstructural Developments during Forging in a New Ni Based Superalloy
The Effects of Local Microstructure on Deformation Mechanism in IN713C Alloy
Thermomechanical Fatigue Behavior of a Ni-Base Superalloy: Influence of Temperature, Dwells, and Aged States
Thermomechanical Processing of Nickel Aluminide Intermetallics
Time and Spatial Resolved Observation of Phase Transformation during Solidification of Laser-Beam Welded TiAl Alloy
Transient Liquid Phase Bonded Ni-Based Woven Superalloys

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