The Plaston Concept : : Plastic Deformation in Structural Materials.

• Author: Tanaka, Isao.
• TeilnehmendeR: Tsuji, Nobuhiro.; Inui, Haruyuki.
• Place / Publishing House: Singapore : : Springer Singapore Pte. Limited,, 2022.; ©2022.
• Year of Publication: 2022
• Edition: 1st ed.
• Language: English
• Physical Description: 1 online resource (278 pages)

Table of Contents

• Intro
• Preface
• Contents
• Part I Introduction
• 1 Proposing the Concept of Plaston and Strategy to Manage Both High Strength and Large Ductility in Advanced Structural Materials, on the Basis of Unique Mechanical Properties of Bulk Nanostructured Metals
• 1.1 Introduction
• 1.2 Reason of Strength-Ductility Trade-Off, and Mechanical Properties of Typical Bulk Nanostructured Metals
• 1.3 Bulk Nanostructured Metals Exhibiting Both High Strength and Large Ductility
• 1.4 Proposing the Concept of Plaston and a Strategy to Overcome Strength-Ductility Trade-Off
• 1.5 Conclusions
• References
• Part II Simulation of Plaston and Plaston Induced Phenomena
• 2 Free-energy-based Atomistic Study of Nucleation Kinetics and Thermodynamics of Defects in Metals
• Plastic Strain Carrier ``Plaston''
• 2.1 Introduction
• 2.2 Shuffling Dominant {10bar12} langle10bar1bar1rangle Deformation Twinning in Hexagonal Close-Packed Magnesium (ch2Ishii16)
• 2.3 Dislocation Nucleation from GBs (ch2Junping16)
• 2.4 Homogeneous Dislocation Nucleation in Nanoindentation (ch2Sato19)
• 2.5 Summary
• References
• 3 Atomistic Study of Disclinations in Nanostructured Metals
• 3.1 Introduction
• 3.1.1 Various Deformation Modes in Nanostructured Metals
• 3.1.2 Disclinations
• 3.2 Grain Subdivision: Disclinations in Grains
• 3.2.1 Strain Gradients in Severe Plastic Deformation Processes
• 3.2.2 Grain Subdivision by Severe Plastic Deformation
• 3.2.3 Partial Disclinations Induced by the Strain Gradient
• 3.3 Fracture Toughness: Disclinations at the Grain Boundary
• 3.3.1 High Strength and High Toughness
• 3.3.2 Dislocation Emission from the Grain Boundary
• 3.3.3 Intragranular Crack
• 3.3.4 Intergranular Crack
• 3.4 Conclusion
• References
• 4 Collective Motion of Atoms in Metals by First Principles Calculations
• 4.1 Introduction.
• 4.2 Phase-Transition Pathway in Metallic Elements
• 4.3 HCP-Ti Under Shear Deformation Along Twinning Mode
• References
• 5 Descriptions of Dislocation via First Principles Calculations
• 5.1 Introduction
• 5.2 Stacking Fault Energy
• 5.3 Analytical Description of Dislocations: Peierls-Nabarro Model
• 5.4 First Principles Calculations of a Dislocation Core
• 5.4.1 Atomic Modeling of a Dislocation Core
• 5.4.2 First Principles Calculations
• References
• Part III Experimental Analyses of Plaston
• 6 Plaston-Elemental Deformation Process Involving Cooperative Atom Motion
• 6.1 Introduction
• 6.2 Nucleation and Motion of Plastons (Possible Deformation Modes) Under Stress
• 6.3 Cooperative Motion of Atoms in Plastons
• 6.4 Origin of Cooperative Atom Motion in the Nucleation of Plastons
• 6.5 Applications of the Concept of Plastons to the Improvement of Mechanical Properties of Structural Materials
• 6.6 Conclusions
• References
• 7 TEM Characterization of Lattice Defects Associated with Deformation and Fracture in α-Al2O3
• 7.1 Introduction
• 7.2 Atomic Structure Analysis of Dislocations in Low-angle Boundaries
• 7.2.1 1/3&lt
• 11bar2 0&gt
• Basal Edge Dislocation
• 7.2.2 1/3&lt
• 11 bar2 0&gt
• Basal Screw Dislocation
• 7.2.3 &lt
• 1bar1 00&gt
• Edge Dislocation
• 7.2.4 1/3&lt
• bar1 101&gt
• Mixed Dislocation
• 7.3 Analysis of Dislocation Formation and Grain Boundary Fracture by in Situ TEM Nanoindentation and Atomic-Resolution STEM
• 7.3.1 Introduction of a Basal Mixed Dislocation and Its Core Structure
• 7.3.2 Crack Propagation Along Zr-Doped ∑13 Grain Boundary
• 7.4 Summary
• References
• 8 Nanomechanical Characterization of Metallic Materials
• 8.1 Nanomechanical Characterization as an Advanced Technique
• 8.2 Plasticity Initiation Analysis Through Nanoindentation Technique.
• 8.3 Effect of Lattice Defects Including Grain Boundaries, Solid-Solution Elements, and Initial Dislocation Density on the Plasticity Initiation Behavior
• 8.3.1 Grain Boundary
• 8.3.2 Solid Solution Element
• 8.3.3 Initial Dislocation Density
• 8.4 Initiation and Subsequent Behavior of Plastic Deformation
• 8.4.1 Sample Size Effect and Elementary Process
• 8.4.2 Dislocation Mobility and Mechanical Behavior in Bcc Crystal Structures
• 8.4.3 Plasticity Induced by Phase Transformation
• 8.5 Summary
• References
• 9 Synchrotron X-ray Study on Plaston in Metals
• References
• 10 Microstructural Crack Tip Plasticity Controlling Small Fatigue Crack Growth
• 10.1 Introduction: Small Crack Problem
• 10.2 Grain Refinement: Characteristic Distributions of Dislocation Barrier and Source
• 10.3 Plasticity-Induced Transformation: Thermodynamic-Based Design
• 10.3.1 Geometrical Effect on Crack Tip Deformation
• 10.3.2 Transformation-Induced Hardening and Lattice Expansion
• 10.4 Dislocation Planarity: Stress Shielding and Mode II Crack Growth
• 10.5 Kinetic Effects of Solute Atoms on Crack Tip Plasticity
• 10.5.1 Strain-Age Hardening
• 10.5.2 Effects of i-s Interaction
• 10.6 Effect of Microstructural Hardness Heterogeneity: Discontinuous Crack Tip Plasticity
• 10.7 Summary
• References
• Part IV Design and Development of High Performance Structural Materials
• 11 Designing High-Mn Steels
• 11.1 Introduction
• 11.2 Plasticity Mechanisms in γ-austenite
• 11.3 Polyhedron Models for FCC Plasticity Mechanisms
• 11.4 Plasticity Mechanisms Under Tensile Loading
• 11.4.1 Selection Rule and Generation Processes
• 11.4.2 Transformation- and Twinning-Induced Plasticities
• 11.4.3 Martensite/twin Variants
• 11.5 Plasticity Mechanisms Under Cyclic Loading
• 11.6 Concluding Remarks
• References.
• 12 Design and Development of Novel Wrought Magnesium Alloys
• 12.1 Introduction
• 12.2 Requirements for Wrought Magnesium Alloys
• 12.2.1 Extruded Alloys
• 12.2.2 Sheet Alloys
• 12.3 Development of Industrially Viable Precipitation Hardenable Alloys
• 12.4 Examples of Heat-Treatable Wrought Alloys
• 12.4.1 Extruded Alloys
• 12.4.2 Sheet Alloys
• 12.4.3 Toward the Improvement of Room Temperature Formability
• 12.4.4 Strengthening by G.P. Zones
• 12.5 Summary and Future Outlooks
• References.