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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Magnesium Technology 2021
Presentation Title Three Dimensional Interaction of {101 ̅2} Twins with Tilt Boundaries in Mg: Twin and Dislocation Transmission
Author(s) Khanh Dang, John Graham, Carlos Tome, Vincent Taupin, Laurent Capolungo
On-Site Speaker (Planned) Laurent Capolungo
Abstract Scope While both dislocations and deformation twins accommodate plastic shear in Mg, the former are line defects while the latter are three-dimensional domains bounded by numerous complex interfaces. As such, both kinetics and kinematics of twin transmission is more complex than that of dislocations. In this work, using atomistic simulations and phase field modeling, we study the reactions associated with the interactions between twins and tilt boundaries. We find that the byproduct of short-range interfacial interactions can either be a new twin or a dislocation, depending on the geometrical alignment of the slip and/or twinning systems, resolved shear stress, and interactions between intrinsic defects within the twins and grain boundaries. Originally, we find that lateral twin transmission is easier than forward twin transmission. Using phase field we systematically investigate the role played by facet energies and mobilities as well as internal stresses on lateral and forward transmission into neighboring grains.
Proceedings Inclusion? Planned:
Keywords Magnesium,

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Absorbable Wire Radiopacity: Influence of Composition and Size on X-ray Visibility
Accounting for the Effects of Dislocation Climb Mediated Flow in Mg alloy ZK10 Sheet
Achieving Excellent Room Temperature Formability and High Strength in Wrought Magnesium Alloy Sheets
Corrosion Behaviour of Shear Extruded Magnesium Alloy
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Development of a Low-cost and Room-temperature Formable Mg Alloy Sheet with In-plane Isotropic Tensile Properties
Effect of Annealing on Microstructure and Hardness of Mg-9Al Alloy Plates Processed by Single-pass Differential Speed Rolling
Effect of Processing Parameters on the Microstructure and Mechanical Behavior of Additively Manufactured WE43 Mg Alloy
Effects of Hot Isostatic Pressing on the Microstructure and Properties of Mg-Gd-Y-Zn Alloys
Efficient Low-cost Gravity-driven Multiple Effect Thermal System (G-METS) Distillation of Magnesium
Eliminating Yield Anisotropy and Enhancing Ductility in Mg Alloys by Shear Assisted Processing and Extrusion
Eutectic Modification of Mg2Si in Mg-Si Alloys for Faster Hydrogen Absorption Kinetics.
Industrial Practice of Extracting Magnesium from Serpentine
Liquid Enhanced Ga-Sn Alloy Anode for RMBs
Low-cost Magnesium Primary Production Using Gravity-driven Multiple Effect Thermal System (G-METS) Distillation
Magnesium and Magnesium Alloy Powder Processing Towards the Development of Near Shape Structural Materials
Measurement of the Critical Resolved Shear Stress for Slip in Mg Alloys Using Instrumented Indentation
Mechanical and Microstructural Behavior of Rolled AZ31B Magnesium Alloy under Three Different Stress States
Mechanisms and Machine Learning for Magnesium Alloys Design
Microstructure and Fracture Toughness of an Extruded Mg-Dy-Nd-Zn-Zr Alloy Influenced by Heat Treatment
Numerical Study of Multi-axial Loading Behavior of Mg Alloy AZ31 Extruded Bar
On the Role of Crystallographic Anisotropy and Texture in Damage Tolerance of Magnesium and its Alloys
Optimization of Mechanical Properties in Magnesium Zinc Alloys
Preparation of Thin-walled Magnesium AZ31 Alloy Tubes Using Friction Stir Extrusion
Quasi-static and Dynamic Rate Mechanical Behavior and Microstructural Investigation of High-purity Mg and AZ31B Alloy
Revisiting Pyramidal Slip in Magnesium
Role of Temperature and Pre-strain in Fatigue Strength of WE43-T5 Magnesium Alloy
Texture and Microstructure Evolution in Thermomechanically Processed Mg-Ca and Mg-Zn-Ca Alloys
The Effects of Basal and Prismatic Precipitates on Deformation Twinning in AZ91 Magnesium Alloy
The High-solution Design of Magnesium Alloys
Thermally Activated Nature of Basal and Prismatic Slip in Mg and Its Alloys
Three Dimensional Atomistic Simulations of {101 ̅2} Non-cozone Twin -- Twin Interaction in Mg – Role of Twin Stability and Mobility
Three Dimensional Interaction of {101 ̅2} Twins with Tilt Boundaries in Mg: Twin and Dislocation Transmission
Understanding Twinning: Detwinning Behavior of Unalloyed Mg during Low-cycle Fatigue Using High Energy X-ray Diffraction

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