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Meeting 2024 TMS Annual Meeting & Exhibition
Symposium Magnesium Technology 2024
Presentation Title Ultrafine-grained Magnesium Alloys Manufactured by Multi-axial Forging: Elucidating Mechanisms of Achieving Both High Strength and High Ductility
Author(s) Andres J. Maldonado, Mathew R. Weaver, Devesh K. Misra
On-Site Speaker (Planned) Andres J. Maldonado
Abstract Scope Warm processing of magnesium (Mg) alloys is a challenge because Mg has a hexagonal close-packed (HCP) lattice with limited slip systems, which makes it difficult to plastically deform at low temperature. To address this challenge, an ingenious concept of combining annealing of as-cast alloy and multi-axial forging (MAF) was adopted for Mg alloys to obtain texture-free ultrafine-grained (UFG) structure with high strength-high ductility combination. We describe here the initial findings that indicated a distinct and fundamental transition in the deformation behavior of low strength coarse-grained (CG) rare earth element containing Mg alloy from twinning to strong and ductile UFG Mg alloy with basal and pyramidal dislocation slip. This implied the role of specific grain boundary states (grain boundary character distribution), grain orientation, and dislocation activity in governing the deformation mechanisms.
Proceedings Inclusion? Planned:
Keywords Magnesium, Process Technology, Mechanical Properties

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D In-situ Diffraction Microstructure Imaging Techniques: Applications to Recrystallization and Deformation Twinning in Mg Alloys
A Succinct Method to Recycle WE43 Mg Alloys – From Wasted Chips to Consolidated Billets
An Experimental Study on Twinning Behavior in Mg Alloys with Different Solute Elements
An Integrated Computational and Experimental Study of Static Recrystallization in the Mg-Zn-Ca Alloy System
Assessment of Magnesium Wire Coatings for Absorbable Medical Devices
Bioabsorbable Magnesium Composite Sheared at High Temperatures for Use in Bone Implants
Corrosion Rates by Immersion and Calorimetry on the Example of Extruded Mg10Gd(1Nd)1La
Cryogenic Deformation Behavior of a Dual-phase Mg-Li Alloy Investigated by In-situ Neutron Diffraction
Data Science Approaches for EBSD Data Processing & Materials Design for Magnesium Alloy
Developing a New Generation of Electrolytic Technology for Making Magnesium Metal
Different Analytical Methods to Determine the Influence of Pitting on the Residual Performance of Mg Alloys as Implant Materials
Dissolution Rate Change of Dissolving Magnesium in a Deoxygenated Environment
Effect of Temperature and Strain Rate on Microstructure and Mechanical Properties of AXM Alloys Processed through Differential Speed Rolling
Energetic Terms Associated with Twin Nucleation in Magnesium
Enhancement of Mechanical Properties of Rolled AZ31 Alloy by Utilizing Ultrasonic Nano-crystalline Surface Modification (UNSM) Treatment and Heat Treatment
Evaluation of Corrosion Performance of Friction Stir Processed Magnesium Alloys Using Multimodal Analysis Across Length Scales
Examination of Cycling Rate Sensitivity in Magnesium Alloys in Fatigue and Corrosion Fatigue
Improved Formability and Corrosion Resistance of Pure Magnesium by Parts-per-million-level Addition of Copper and Calcium
In Situ Tomographic Investigation of the Combined Effect of Mechanical Load and Degradation on Mg2Y1Zn(Gd, Ag, Ca)
Interaction and Solution Behavior of Alloying Elements in Mg Alloys
Investigations on Creep Behavior of Extruded Mg-Ca-Al Alloys
Investigations on the Forging Behavior of Mg-Ca-Al Alloys
K-10: Mechanical Behavior and Constitutive Modeling of Mg-Zn-Y Alloy in Electrically-assisted Tensile Test
K-11: Porosity and Mechanical Properties of Squeeze Cast and Permanent Mold Cast Wrought Mg Alloy AZ31
K-9: A Reduced Order Model of Magnesium Distillation
Machine learning Guided Accelerated Discovery of Structure-Property Correlations in Lean Magnesium Alloys for Biomedical Applications
Magnesium Wheels
Microstructural Evolution Near Microcrack in AZ31 Mg Alloy Under Electropulses
Microstructural Evolution of Hot-rolled AZ31 Mg Plate Induced by Electropulsing Treatment
Microstructure Refinement through Ultrasonic Melt Treatment of a Biodegradable Magnesium Composite
Processing and Characterization of Mg Microtubes for Biodegradable Vascular Stents
Production of Mg-Mg2Si Composites
Quantifying the Role of Coarse Intermetallic Particles on Deformation Behavior
Recent Advances in PRISMS-Plasticity Software for Simulation of Deformation in Mg Alloys
Recycling of Magnesium Alloy Using the Gravity-driven Multiple Effect Thermal System (G-METS)
Research Towards Sintering Improvement During Press and Sinter Processing of Mg and Mg Alloy Powders
Severe Plastically Deformed Mg-Zn-Zr-RE Alloy Developed as a Biomaterial
Study of the Precipitation of Calcium and Magnesium in the Form of Phosphates from Residual Brine from the Salar De Uyuni, After the Respective Recovery of Potassium Chloride by Evaporation – Crystallization
Suppressing Twinning in Magnesium Alloys by Atomic Scale Engineering
Thermodynamics of Mg-Y-O Alloys and Segregation at the Mg/MgO Interface
Ultrafine-grained Magnesium Alloys Manufactured by Multi-axial Forging: Elucidating Mechanisms of Achieving Both High Strength and High Ductility
Understanding the Influence of Ca and Zn on the Microstructure and Texture Evolution of Mg-(Ca, Zn) Alloys during Static Recrystallization

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