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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Advanced Characterization Techniques for Quantifying and Modeling Deformation
Presentation Title Characterization of the Factors Influencing Retained Austenite Transformation in Q&P Steels via EBSD Analysis
Author(s) Derrik Adams, David Fullwood, Jeff Cramer, Shamoon Irfan, Hannah Evanson, Tyler Mathis, Stephen Cluff, Mike Miles, Eric Homer, Tyson Brown, Raj Mishra, Robert Kubic
On-Site Speaker (Planned) Derrik Adams
Abstract Scope Formable Advanced High-Strength Steels (AHSS) have a unique combination of high strength and ductility, which makes them ideal in the effort to lightweight vehicles. The AHSS in this study rely on the Transformation Induced Plasticity (TRIP) effect, in which retained austenite (RA) grains transform to martensite during plastic deformation, providing extra ductility via the transformation event. Understanding the factors involved in RA transformation is therefore key to optimizing the microstructure of these steels. This research seeks to increase understanding of the correlations between microstructure and RA transformation in TRIP steels. Through in-situ tensile tests combined with EBSD and FSD scans, local strain maps at the micro-scale can be created and analyzed with DIC software. With this information, it is hoped that the questions of when and why transformation occurs can be answered, allowing an improved model of the transformation to be created and further optimization of these advanced materials.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D Dislocation Crystallography
4D Hydrogen Embrittlement Behaviour in High Strength Aluminium Alloy
4D Imaging of Deformation in Polymeric Foams Using X-ray Synchrotron Tomography
A Micromechanical Study for Twin Nucleation in hcp Metals: Development of Analytical Solution to Study Twin Bands Formation
A New Numerical Integration Scheme for Fast Fourier Transform-based Crystal Plasticity Models
A Study of Anisotropy in Tensile and Cyclic Deformation Behavior of Hexagonal Close Packed Titanium Using Electron Backscatter Diffraction and Elastoplastic Self-consistent Simulations
Advances in Information Extraction from Near-field High Energy Diffraction Microscopy Data Sets
An Application of X-Ray Micro Computer Tomography to Understand Material Flow during Friction Stir Channelling Process
Analysis of Dislocation Slip Across Boundaries in Tantalum Using ECCI and CC-EBSD
Analyzing Subsurface Dislocation Content of Ti-5Al-2.5Sn Alloy Using Micro-Laue Diffraction Based Streak Anlaysis and Transmission Electron Microscopy
Applications of Low(er) Voltage EBSD to Heavily Deformed Material Systems
Atomic Scale Modeling and Experimental Observations of Deformation Mechanisms in Ni Base Superalloys.
Characterization of Dislocation/GB Interactions via HR-EBSD and Machine Learning
Characterization of the Factors Influencing Retained Austenite Transformation in Q&P Steels via EBSD Analysis
Combining Experiments and Models via a Bayesian Network Approach to Predict Short Fatigue Crack Growth
Comparison of Strain Maps from Digital Image Correlation and Modeling of Polycrystalline Metals
Compression Testing of Single Crystals of β-Si3N4 on Micron Meter Scale by Means of FIB Machining Combined with EBSD Orientation Mapping
Correlating Structural Heterogeneity to Deformation of Metallic Glasses Using Fluctuation Microscopy and Mesoscale Simulation
Correlative Microscopy in Materials Science
Delayed Cracking and Earing Phenomena in Deep-drawn Stainless Steel Alloys: Interplay among Microstructure, Texture, Transformation Kinetics, Residual Stress, and Load Partitioning
Detection of the Onset of Plasticity in Micro-crystals: In-situ Deformation of InSb Micro-pillars under Synchrotron Coherent X-ray Nanobeam
Development of a Constitutive Model for Plastic Deformation in Single Crystal Niobium
Direct Measurement of Critical Resolved Shear Stress Values in a Mg Alloy by In Situ 3D-XRD
Distribution of Cr Atoms in a Strained and Strain-relaxed Fe89.15Cr10.75 Alloy: Mössbauer Effect Study.
Dominant Axes of Orientation Distributions and the Peculiar Case of [111] Grains in Tension
Ductile Fracture of Porous Metals: Coupling Coalescence Criteria in Finite Element Models
Effect of Heterogeneous Microstructure on Deformation Twinning in HCP Titanium
Effect of Local Stress on Fault Formation and Propagation within HCP Materials
Electron Microscopy Image Simulation Using Atomistic Simulation Data
Evolution of Stacking Faults during Thermomechanical Processing of Biomedical Co–Cr–Mo Alloys Studied by X-ray Diffraction Line-profile Analysis
Experimental and Crystal Plasticity Based Characterization of Heterogeneous Deformation in Hexagonal Titanium
Extending EBSD’s Phase Differentiation Capabilities Through the Dictionary Approach
High Resolution Strain Measurements in a Polycrystalline Superalloy during Plastic Deformation: Slip Band Discontinuity Analysis
Impact of Microstructural Features on the Grain-orientation Dependent Strain Hardening and Softening Mechanisms in Al-Cu Alloys
In-situ Characterization of Plasticity Mechanisms along Complex Stain Paths
In-situ EBSD Analysis and Crystal Plasticity FE Simulations in a CP Titanium
In-situ Experiments to Capture the Rapid Evolution of Microstructure during Phase Transformation of Titanium Under Dynamic Loading
In-situ Monitoring of Cyclic Deformation by High Resolution Reciprocal Space Mapping
In-situ Neutron Diffraction during Biaxial Strain Path Changes
In-situ Neutron Diffraction of Pure Mg during ECAE Processing
In-TEM Observation on Twinning in Nano-sized BCC Crystal
In Situ Electron Microscopy Investigation on Plastic Deformation in a Metastable Beta Titanium Alloy
In Situ TEM Study of Dislocation – {10-12} Twin Boundary Interaction in Mg
Influence of Strain Rate and Microstructure on the Substructure Evolution and Properties of Ti-407
Intermittent Plasticity Associated with Collective Motion of Dislocation in bcc Alloys
Investigating Internal Lattice Strains in DMLS IN718 Material in the as Built and Post-processed Conditions
Investigating Surface Deformation and 3D Microstructure in Polycrystalline Metals
Measuring Intra-grain Orientation Gradient and Elastic Strain Field by Near-field High Energy X-ray Diffraction Microscopy
Mechanical Fields due to Double Twinning in Magnesium Alloy AZ31 as Revealed by Explicit Modeling of Twin Lamellae Using a Crystal Plasticity Finite Element Model
Micro-compression Testing of Mg-Nb Multilayered Nano-composites for Ultra-high Strength, Formability and Ductility
Microstructural Evolution of 316L Stainless Steel Subjected to Shear
Microstructural Evolution of Ti-7Al Under Cyclic Loading
Microstructure and Deformation Mechanisms in Ti-7Al
Modern Diffraction Methods for the Investigation of Thermo-mechanical Processes
Novel 3D Crystallite-scale Characterization of Deformation during Cyclic Loading of Low Crystal-symmetry Phases
Plastic Deformation Behaviour of a 𝛾-TiAl Alloy in High Cycle Fatigue at up to 700 °C by Nano-scale Digital Image Correlation of a Remodelled Au Speckle Pattern.
Quantifying Microstructural Deformation in Cold Sprayed Aluminum-copper Alloy Coatings
Representative Volume Generation from 2D EBSD Maps and their Implementation in FFT Based Crystal Plasticity Models
Role of Grain Boundary Sliding in Deformation of Polycrystalline Materials
Simulations of Bi-crystal Nanoindentation and Polycrystalline Uniaxial Tensile Deformation with a Grain Boundary-aware Crystal Plasticity Model
Slip System Kinematic Hardening-based Simulation of Reverse Plasticity in Nanoindentation of β-tin
Statistical Model Based on Large Field-of-view Images Predicts Microstructural Damage-sites
Strain Localisation Behaviour in Ti834 Subjected to Cold Creep Testing
TEM 3D Visualization Using Two Micrographs
Tensile Behavior of Individual Grains in Austenitic Steel Studied by 3DXRD and Crystal Plasticity Simulations
Three-dimensional X-ray Diffraction Imaging of Dislocations in Polycrystalline Metals Under Tensile Loading
Time-dependent Characterization at the Mesoscale: The MaRIE Project at Los Alamos National Laboratory
Time Dependent Plasticity and Cold Dwell Fatigue in Ti-alloys
Toward Development of an Optimum Biaxial Tensile Test Specimen Design
Twinning-detwinning Behavior during the Low-cycle Fatigue Testing of Pure Magnesium Using High Energy X-Ray Diffraction
Understanding Effect of Texture and Topology on Stress Hotspots Using Machine Learning
Understanding the Role of Interfaces on Fully Lamellar TiAl Alloys through Micromechanical Testing
Using Correlative HRDIC, EBSD and ECCI to Answer Questions of Microstructure-specific Plasticity
Using Crystal Plasticity to Predict Local Deformation during Reverse Loading of an Aerospace Alloy
Using EBSD to Quantify Defect Structures in Deformed IF Steels

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