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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Ultrafine-grained and Heterostructured Materials (UFGH XI)
Presentation Title Synthesis of an Ultrafine-grained Metastable Al Alloy through Mechanical Bonding by High-pressure Torsion
Author(s) Megumi Kawasaki, Jae-Kyung Han, Terence G. Langdon
On-Site Speaker (Planned) Megumi Kawasaki
Abstract Scope Processing by high-pressure torsion (HPT), which was developed initially as a grain refinement technique, was extended recently to the mechanical bonding of dissimilar metals. In this study, separate disks of Al and Mg were mechanically bonded by HPT up to 100 turns at 6.0 GPa. A series of experiments revealed that such high straining through HPT processing introduced an ultrafine-grained metastable Al alloy with grain sizes of ~35-40 nm in a state of supersaturated solid solution with a maximum Mg solubility of ~38.5 at.%. A superhard Al solid solution with a maximum Vickers microhardness value of ~370 was observed consistently across the disk diameter. Our results demonstrate the synthesis of a bulk nanocrystalline metastable alloy with good microstructural stability at room temperature where such bulk solids are not yet reported for mechanical alloying by powder metallurgy.
Proceedings Inclusion? Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Atomistic Analysis of the Effect of Internal Defects on the Deformation of Nanocrystalline Metals
Bulk nc-Dissolvable Alloys Enable Design of Retrievable Sensors for Oil & Gas
Cu-Ta FCC-BCC Metal Composites Fabricated via Powder Consolidation by Equal Channel Angular Extrusion
Deformation and Failure of Gradient Metallic Nanoglasses
Deformation Induced Microstructures in Ultrafine Grain Magnesium Fabricated by ECAP-C
Effect of High-pressure Torsion on a Few Mechanical and Electrical Behaviors of Commercially Pure Cu
Effect of High-pressure Torsion on Corrosion Behavior of a Magnesium ZK60 Alloy in 0.1M NaCl
Effect of Interface Type on the Deformation Behavior of Nanostructured Metals
Enhanced Strength and Thermal Stability of Cu/Fe Nanolaminates
Evaluation of Misorientation and Local Deformation in Bimodal Harmonic Structured Stainless Steel by Hybrid Imagings of Diffraction and Refraction Contrast Using Synchrotron Radiation X-ray
Fracture and Ductility of Nanostructured Molybdenum–copper Composites
Fracture Strain and Forging Limit Analysis of Polycrystalline Alloys at Elevated Temperatures
Grain Boundary Design of Nanostructured Metals with Superior Mutlifunctional Properties
Grain Refinement-induced Plasticity in Heterostructured Brass
Heterogeneities in Plastic Deformation Mechanisms in UFG Aluminum Studied by In-situ TEM Straining and Bulk Deformation
Heterogeneous High-entropy Alloys: A Review
Heterogeneous Lamella Phases Make 2205 Stainless Steel with Superior Strength and Ductility
Heterogeneous Pore Architecture Achieved by Spark Plasma Sintering
Heterostructured Titanium with Superior Tensile Properties through Hybridisation of Microstructures by Selective Laser Melting
Hierarchical Microstructure in Additively Manufactured Ti-6Al-4V and its Effect on Mechanical Properties
Hierarchical Structures in Ti-6Al-4V by Thermohydrogen Refinement of Microstructure
In-situ Neutron Diffraction Study on the Tensile Deformation of an Ultrafine-grained Fe-Ni-Al-C steel Including B2 Phase
Magnesium Based Composites Produced through HPT
Making Strong, Tough, Thermally-stable, and Radiation Tolerant Nanocrystalline Materials in Bulk Form
Mechanical Behavior of Structurally Gradient Alloys
Mechanical Properties and Microstructure Evolution of Multilayered Al-Cu Hybrid Materials Produced by High-pressure Torsion
Mechanical Properties and Residual Stress of Copper Processed using Ultrasonic-nanocrystalline Surface Modification
Mechanical Properties of Nanocrystalline High-entropy Alloys Produced By High-pressure Torsion
Mechanical Properties Optimization via Microstructural Control of a Metastable β-type Ti-Nb Gum Metal
Mesoscale Modeling of Deformation and Failure Behavior of Metallic Ultrafine-grained Microstructures
Microscructure Evolution in CuZr Alloy and cp Ti Processed by a Novel Technique of Rotational Free Bending
Microstructure and Microtexture of Gradient Metals Processed by Asymmetric Rolling
Microstructures and Mechanical Properties of Supersaturated Al-Mg Alloys Produced by Powder Consolidation using High-pressure Torsion
N-22: A Comparative Study of Cu/Ta and Ti/Ta Multilayer Composites Processed by Accumulative Roll Bonding
N-23: Bulk High Strength Ultrafine Grained Silver Alloys via Powder Metallurgical Approaches
N-25: Deformation Mechanism and Mechanical Properties of Nano/Ultrafine Grained and Heterogeneous Fe-17Cr-6Ni Austenitic Steel
N-27: Effect of Severe Plastic Deformation on Mechanical Properties of Al6061
N-28: Enhanced Mechanical Properties of Nano/Ultrafine-grained Structure Formed by Martensite Reversion in 18Cr-8Ni Austenitic Stainless Steel
N-29: Evolution in Mechanical Response, Phase Transformation and Texture of Titanium Aluminide Processed by High-pressure Torsion
N-31: Investigations on the Microstructure and Properties of Ultrafine-grained Cu-Al Materials Jointed with Friction Stir Welding
N-32: Joining of Ultrafine Grained Aluminium by Friction Stir Welding-processing, Microstructure and Properties of Similar and Dissimilar Welds
N-34: Measurement of Strain Effects on Electrical Conductivity and Wear Properties in Materials Processed by High Pressure Torsion
N-35: Mechanical and Electrical Properties of an Ultrafine Grained Al-0.7Fe-0.1Si-0.2Er Alloy Processed by ECAP
N-36: Microstructure and Tensile Behavior of Nanostructured Gradient TWIP Steel
N-37: Nucleation, Growth and Coarsening of Precipitates in Immiscible Alloys during Low-temperature Severe Plastic Deformation: Gibbs-Thomson Behavior
N-38: Optimization of Mechanical Properties and Corrosion Resistance of Ultra-fine Grained Titanium By Low-temperature Annealing
N-39: Pressure Effects during High Pressure Torsion of Dilute Magnesium-Yttrium
N-42: Studying on the Role of Heterogeneous Interface in Graphene/Metal Composites for Enhancing the Irradiation Tolerance
N-43: Synchrotron-based High-resolution Reciprocal Space Mapping to Understand Elasto-plastic Transition in Harmonic Structured Materials
N-44: Synthesis and Mechanical Characterization of Metallic Films with Highly Controlled Heterogeneous Microstructures
Nanostructures and Properties of Rapid Directional Solidification of Al Alloys
On the Fracture Toughness of Gradient Pure Nickel
Properties of Ultrafine Grain Titanium Fabricated by Multimode Deformation Processing
Role of UFG-shell Network on Improving Mechanical Properties in Harmonic Structure Materials
Size-dependent Dislocation-twin Interactions
Size Dependent Strengthening in High Strength Nanotwinned Al/Ti Multilayers
Slip Transmission in Ultra Fine Grain Materials
SPD-induced Synthesis of Archimats: a New Paradigm in Materials Design
Strain-Rate Dependence of Flow Stress Hardened by Annealing and Softened by Deformation in Nanostructured Aluminum Processed by Accumulative Roll-Bonding
Strain Partitioning by Recurrent Shear Localization during Equal-channel Angular Pressing
Synchrotron X-ray and Neutron Diffraction – Opportunities for Ultrafine-grained and Hetero-structured Materials
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Tailoring Strength of 6082 Aluminium Alloy via Combination of Rolling and Heat Treatment
Testing Old & New Ideas to Address Unresolved Questions in UFGs & Patterned Micro/Nano Structures
The Influence of Severe Plastic Deformation on Phase Transformations in a Metastable Beta Titanium Alloy Ti15Mo
Transition from Source- to Stress-controlled Plasticity in Nanotwinned Materials below a Softening Temperature
Ultra-uniformity in Nanocrystalline Materials: Implications from Generalized LSW Growth Theory and Validations
Ultrafine Grained 3003 Aluminium Alloy Plates with Low Anisotropy and the Capabilities to Deep Drawing
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