Nanostructured materials by high-pressure severe plastic deformation : [proceedings of the NATO Advanced Study Institute on Nanostructured Materials by High-Pressure Severe Plastic Deformation

Recently, it was reported that nanostructured materials processed under high pressure by HPT and ECAP have an extraordinary combination of both high strength and high ductility, which are two desirable, but rarely co-existing properties. These findings indicate that high-pressure is a critical factor that can be employed to process nanostructured materials with superior mechanical, and possibly also physical, properties. It is the objective of this workshop to review our current knowledge, identify issues for future research, and discuss future directions on the processing and properties of nanostructured materials via SPD techniques, with a special emphasis on high-pressure effects. The 42 peer-reviewed papers in this book cover areas of high pressure effect on the nanostructure and properties of SPD-processed materials, fundamentals of nanostructured materials, development of high-pressure SPD technologies for commercializations, recent advances of SPD technologies as well as applications and future markets of SPD-processed nanostructured materials. Deformation Twinning in Nanocrystalline fcc Copper and Aluminum....Pages 3-11 High Pressure in Large Plastic Deformation: Effects and Techniques....Pages 13-20 Towards Comparison of Alternative Methods for Producing Bulk Nanostructured Metals by Severe Plastic Deformation....Pages 21-28 Applications of Severe Plastic Deformations for Materials Nanostructuring Aimed at Advanced Properties....Pages 29-37 New Applications of the SPD Concept: μSPD....Pages 39-46 Mechanisms of Submicron Grain Formation in Titanium and Two-Phase Titanium Alloy during Large Strain Warm Working....Pages 47-54 Nanostructured and Polycrystalline Ti Anomalies of Low Temperature Plasticity....Pages 55-60 Modeling of Grain Subdivision during Severe Plastic Deformation by VPSC Method Combined with Disclination Analysis....Pages 61-66 Ultimate Grain Refinement by ECAP: Experiment and Theory....Pages 69-76 Twist Extrusion as a Tool for Grain Refinement in Al-Mg-Sc-Zr Alloys....Pages 77-82 Microstructural Characteristics of Ultrafine-Grained Nickel....Pages 83-88 Refinement and Densification of Aluminum Nickelides by Severe Plastic Deformation....Pages 89-94 Low-Temperature Sheet Rolling of TiAl Based Alloys....Pages 95-100 Application of Diamond Anvil Cell Techniques for Studying Nanostructure Formation in Bulk Materials Directly during Severe Plastic Deformation....Pages 101-106 Anomalous Nitrogen Solubility in Gradient Nanostructured Layer Formed in the Surface of Bulk Iron by Severe Plastic Deformation under Friction....Pages 107-112 Evolution of Microstructure and Mechanical Properties of Ti-5Mo-5Al-5V Alloy Processed by High Pressure Deformation....Pages 113-119 Martensitic Transformations in Nanocrystalline Fe-Cr-Ni and Fe-Mn Alloys....Pages 121-126 Precipitation Behavior in Age-Hardenable Alloys after Severe Plastic Deformation....Pages 129-136 Understanding the Textural and Microstructural Development in Two-Pass ECAP by Route A of a Commercial Aluminium Alloy....Pages 137-144 Microstructural Refinement Of Bulk Nb And Ta by Severe Plastic Deformation for Composite Superconductor Applications....Pages 145-150 Modeling Hardening Effects and Grain Size Evolution in Metals Induced by Severe Plastic Deformation....Pages 151-174 Nanocrystalline Structure Formation under Severe Plastic Deformation and its Influence on Mechanical Properties....Pages 161-168 Structure and Properties of Ti Alloys Processed by ECAP....Pages 169-174 Microstructure and Mechanical Properties of 6082 Aluminum Alloy Processed by Hydrostatic Extrusion....Pages 175-180 Grain Refinement and Viscous Fracture of Metals during Severe Plastic Deformation: Mathematical Simulation....Pages 181-185 Structure and Properties of Ultrafine Grained Nickel after Severe Plastic Deformation....Pages 187-192 Deformation Mechanisms Inducing Microstructure Refinement in Commercially Pure Aluminium Processed via ECAP: Comparison to Cold-Rolling and Hot-Torsion....Pages 193-198 The Deformation Characteristics of Pure Aluminum Processed by Equal-Channel Angular Pressing....Pages 201-208 Microstructural Aspects of Cyclic Deformation and Fatigue of Ultrafine-Grained Metals....Pages 209-216 Modelling Mechanical Properties of SPD Materials During and After Severe Plastic Deformation....Pages 217-226 Unique Deformation Behaviors of the Ultrafine Grained Aluminum Alloys Fabricated by Accumulative Roll Bonding....Pages 227-234 Microstructure and Mechanical Properties of Long, Ultrafine-Grained Ti Rods....Pages 235-240 Improving the Mechanical Properties of Ti-6Al-4V Alloy by Equal Channel Angular Pressing....Pages 241-246 Structural Features, Strength, and Mechanisms of Deformation of Nanocrystalline Materials....Pages 247-252 Response of Mechanical Properties across the Sample to ECAP....Pages 253-258 Deformation and Failure of Ti-6Al-4V Nanostructured Alloy at 300–4.2 K....Pages 259-263 Improvement of Mechanical Properties in a Nanostructured Fe-Ni-Mn Steel Prepared by Heavy Plastic Deformation....Pages 265-269 Surface nanostructure and tribological properties of metallic materials....Pages 271-274 Elevated Temperature Deformation Characteristics of Nanocrystalline Materials....Pages 277-284 Features of Creep in Bulk Nanostructured Composite Cu-0.5wt.%Al 2 O 3 ....Pages 285-291 Effect of Second Phase Particles on Annealing Ultrafine Grained Aluminium Alloys Deformed by ECAE....Pages 293-298 The Influence of the SPD Regimes on Superplastic Behavior of an Aluminum Alloy....Pages 299-304 This book collects 42 peer-reviewed papers presented in the NATO Advanced Research Workshop on Nanostructured Materials by High-Pressure Severe Plastic Deformation, held in Donetsk, Ukraine, September 22-24, 2004.

Recently, it was reported that nanostructured materials processed under high pressure by HPT and ECAP have an extraordinary combination of both high strength and high ductility, which are two desirable, but rarely co-existing properties. These findings indicate that high-pressure is a critical factor that can be employed to process nanostructured materials with superior mechanical, and possibly also physical, properties. It is the objective of this workshop to review our current knowledge, identify issues for future research, and discuss future directions on the processing and properties of nanostructured materials via SPD techniques, with a special emphasis on high-pressure effects.

During the 3-day workshop, about 60 scientists from 12 countries presented 60 papers. Over 20 keynote presentations were given by distinguished scientists in this field. Papers in this book cover areas of high pressure effect on the nanostructure and properties of SPD-processed materials, fundamentals of nanostructured materials, development of high-pressure SPD technologies for commercializations, recent advances of SPD technologies as well as applications and future markets of SPD-processed nanostructured materials