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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Ultrafine-grained and Heterostructured Materials (UFGH XI)
Presentation Title Heterogeneous Pore Architecture Achieved by Spark Plasma Sintering
Author(s) Alexander Preston, Yuchen Lin, Kaka Ma
On-Site Speaker (Planned) Kaka Ma
Abstract Scope Spark plasma sintering (SPS) is known for its capability of preserving ultrafine-grained (UFG) structure because of its rapid densification rate. While many studies on UFG materials aimed to minimize porosity to achieve a high relative density, forming porous structure became one trend of the powder metallurgy as pores reduce the weight of the materials and increase the surface area. In this presentation, recent efforts on the fabrication of porous materials via SPS are discussed, including literature review and our own research results on stainless steels and Ti. It is found partial densification and thermal gradients in SPS provide an opportunity to engineer a heterogeneous meso- and micro- pore architecture in the sintered materials. Reducing the pore size to the submicron regime improve strength and deformability. The discussion is emphasized on the effect of thermal gradients in SPS on the formation of inter-particle contacts and the consequent pore structure.
Proceedings Inclusion? Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume

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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
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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
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Size-dependent Dislocation-twin Interactions
Size Dependent Strengthening in High Strength Nanotwinned Al/Ti Multilayers
Slip Transmission in Ultra Fine Grain Materials
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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
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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
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