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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Advanced Characterization Techniques for Quantifying and Modeling Deformation
Presentation Title Strain Accommodation Mechanisms in the Near Alpha Ti-6Al-2Sn-4Zr-2Mo Alloy Studied Using Experiments and Simulations
Author(s) Samuel Hemery, Azdine Nat-Ali, Mikael Gueguen, Olga Smerdova, Christophe Tromas
On-Site Speaker (Planned) Samuel Hemery
Abstract Scope In spite of decades long research focused on deformation in Ti alloys, the understanding of the early slip activity regime is still incomplete. In this context, performance prediction under cyclic loadings such as experienced in-service is difficult. In this context, characterization of operating deformation mechanisms was carried out using in-situ SEM tensile tests combined with electron back-scattered diffraction. Additional information about the slip character was obtained using atomic force microscopy. A specific attention was paid on the sequential activation of the different strain accommodation mechanisms including slip and twinning, and the relation to room temperature creep / stress relaxation. A CRSS dataset for the different slip and twinning modes observed is then derived and validated using fast-Fourier transforms based simulations. New insights into the fatigue and dwell-fatigue behaviors are finally discussed.
Proceedings Inclusion? Planned:
Keywords Titanium, Characterization, Mechanical Properties

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D Orientation and Strain Mapping of Recrystallization and Micro-texture Development in Heavily Deformed Ferritic Alloys
A 3D Microstructure Evaluation Tool for Interface Statistics: An Application to Deformation Twins
A Thermo-elasto-viscoplastic Finite Element Model to Study Polycrystalline Evolution during Metal AM
A Thermo-mechanical Model for Dislocation Dynamics in Transient Heterogeneous Temperature Fields
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Advanced Characterization of Mock High Explosive
An Atomistic-to-microscale Computational Analysis of the Dislocation-interface Reaction and the Subsequent Structure Changes in Two-phase Materials under Compression and Shear
Analysis of RVE Size Based on Slip Activity Using Far-field HEDM Data
Applications of an Efficient Elasto-visco-plastic Self-consistent Polycrystal Model Interfaced with a Finite Element Framework
Applications of Direct Detection for EBSD Analysis of Deformed Materials
Capturing Deformation Mechanisms in Additively Manufactured Parts through High-fidelity Modeling and In Situ Computed Tomography
Centimeter to Nanometer Materials Characterization Informed Phase Field Modeling of Mechanical Failure in 6022/EK100 Linear Friction Stir Welds
Characterization of Heat-resistant Steels and Alloys for Life-prediction Modeling
Characterization of Microstructure Evolution and Micromechanics Behavior of Steels with Metastable Austenite during Uniaxial Tensile Loading
Considering the Impact of Anisotropy on Microcracking in Brittle Materials Using the Phase Field Fracture Model
Cores of 1/2<110>-type Dislocations in the CrMnFeCoNi High-entropy Alloy Investigated by STEM, the Center of Symmetry and the Nye Tensor Mapping Techniques
Coupling In-situ SEM Experiments with Acoustic Emission to Unravel the Underlying Deformation Mechanism in Metals
Crystal Plasticity Finite Element Simulation of Microstructural Deformation in Ultra-thin Ferritic Steel Sheet
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Enhanced Predictive Modelling of Laser Weld Failure Using 3D Characterization of 304L
Estimation of Micro-Hall-Petch Coefficients in Mg-4Al as a Function of Grain Boundary Parameters
Evolution of Sigma Phases in 347H Stainless Steels Subjected to Isothermal Aging at 750 oC
Experimental Characterization and Explicit Slip Band Micromechanical Modeling of Slip Localization in FCC and HCP Metals
Exploring Nanoscale Fatigue through Coupled In-situ Microscopy and Modeling
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Imaging Defects and Their Dynamics Using Scanning Electron Microscopy Approaches
Improving 2D Diffraction Peak Detection Using Shannon Entropy
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Investigation of Dislocation Structures in an Al-Li Binary Alloy via High Resolution X-ray Characterization Techniques
Investigation of Grain Size Effects on Cyclic Deformation and Twinning in Magnesium Alloys by High Energy X-ray Diffraction
Investigation of the Microstructure and Plastic Deformation of AM 316L Stainless Steels
Line Profile Analysis from In Situ Synchrotron X-ray Diffraction to Study the Microstructural Evolution during Elasto-plastic Transition in Nickel with Bimodal Grain Structure
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Low kV EBSD & Physics-based Modeling of Dislocation Cell Structures in Aluminum
Martensitic Transformation-mediated Twin Nucleation in Hexagonal Close Packed Metals
Meso-scale Characterization and Strain-gradient Enabled Simulation of the Multi-strain Path Deformation of AA6016-T4
Modeling and Experimental Characterization of Intragranular Residual Stresses, Statistically Stored and Geometrically Necessary Dislocations
Multiscale Characterization of Metallic Alloy Microstructures and Links to Properties
NOW ON-DEMAND ONLY – Exploring Plastic Deformation and Color of Metals with Mathematical Morphology
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Statistical Analysis of Forward and Lateral Transmission of Twins Across Grain Boundaries in HCP Magnesium
Strain Accommodation Mechanisms in the Near Alpha Ti-6Al-2Sn-4Zr-2Mo Alloy Studied Using Experiments and Simulations
Strain Rate Dependent Deformation and In-situ TEM Crystallization in Crystalline/Amorphous Ni-Zr Thin Films
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