Heterostructured materials : novel materials with unprecedented mechanical properties /

Heterostructured (HS) materials represent an emerging class of materials that are expected to become a major research field for the communities of materials, mechanics, and physics in the next couple of decades. One of the biggest advantages of HS materials is that they can be produced by large-scal...

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Bibliographic Details
Corporate Author:	Taylor & Francis
Other Authors:	Wu, Xiaolei (Editor), Zhu, Y. T. (Yuntian T.), 1963- (Editor)
Format:	eBook
Language:	English
Published:	Singapore : Jenny Stanford Publishing, [2022]
Subjects:	Heterostructures. Heterostructures > Mechanical properties. Hétérostructures. Hétérostructures > Propriétés mécaniques. TECHNOLOGY > Metallurgy. Heterostructures Electronic books.
Online Access:	Connect to the full text of this electronic book

Table of Contents:

Cover
Half Title
Title Page
Copyright Page
Table of Contents
Preface
Part I: Perspective and Overview
Chapter 1: Heterogeneous Materials: A New Class of Materials with Unprecedented Mechanical Properties
1.1: Background
1.2: Definition of Heterostructured Materials
1.3: Deformation Behavior of Heterostructured Materials
1.4: HDI Strengthening and HDI Work Hardening
1.5: Microstructural Requirement for the Optimum Mechanical Properties
1.6: Future Perspective
Chapter 2: Perspective on Heterogeneous Deformation Induced (HDI) Strengthening and Work Hardening
2.1: Background
2.2: Brief History of Back Stress
2.3: Dislocation Models for Back Stress
2.4: Back Stress and Mechanical Properties
2.5: Issues with the Back Stress Concept
2.6: New Definition
2.7: Outstanding Issues
Chapter 3: Ductility and Plasticity of Nanostructured Metals: Differences and Issues
3.1: Introduction
3.2: Ductility
3.3: Plasticity
3.4: Relationship between Ductility and Plasticity
3.5: Confusions, Misconceptions and Clarifications
3.5.1: Misconception/Confusion 1: Tensile Ductility
3.5.2: Misconception/Confusion 2: Mobile Dislocations Lead to Good Ductility
3.5.3: Misconception/Confusion 3: Low Ductility Equals Low Plasticity
3.5.4: Misconception/Confusion 4: Cross-Area-Reduction as an Indicator of Ductility
3.6: Issues for Nanostructured Materials
3.6.1: Sample Size Effect
3.6.2: Approaches to Improve Ductility
3.7: Summary
Part II: Fundamentals of Heterostructured Materials
Chapter 4: Extraordinary Strain Hardening by Gradient Structure
4.1: Introduction
4.2: Microstructural Characterization of Gradient Structure
4.3: Unique Mechanical Responses under Uniaxial Tension
4.4: Discussion and Summary.
Chapter 5: Heterostructured Lamella Structure Unites Ultrafine-Grain Strength with Coarse-Grain Ductility
5.1: Introduction
5.2: Microstructure of Heterogeneous Lamella Structure
5.3: Mechanical Properties and Strain Hardening of HL Structure
5.4: Bauschinger Effect and Back Stresses
5.5: Strain Partitioning
5.6: Materials and Methods
5.6.1: Materials
5.6.2: Asymmetrical Rolling (AsR) for Heterostructured Lamella (HL) Structured Ti
5.6.3: Tensile Test and Loading-Unloading-Reloading (LUR) Test
5.6.4: EBSD and TEM Observations
Chapter 6: Synergetic Strengthening by Gradient Structure
Chapter 7: Hetero-Deformation-Induced Strengthening and Strain Hardening in Gradient Structure
Chapter 8: Residual Stress Provides Significant Strengthening and Ductility in Gradient Structured Materials
8.1: Introduction
8.2: Results and Discussion
8.3: Conclusion
Chapter 9: Mechanical Properties of Copper/Bronze Laminates: Role of Boundaries
9.1: Introduction
9.2: Experimental Methods
9.3: Results
9.3.1: Microstructures
9.3.2: Heterogeneity Across Boundaries
9.3.3: Uniaxial Tensile Tests
9.3.4: Ex-situ EBSD Mapping and GND Characterization
9.4: Discussions
9.4.1: Dislocation Pile-Up Model for the GND Density Close to Boundaries
9.4.2: Role of Boundary in Deformation of Nanostructured Bronze
9.4.3: Effect of Boundary Spacing on HDI Hardening
9.5: Conclusion
Chapter 10: Hetero-Boundary-Affected Region (HBAR) for Optimal Strength and Ductility in Heterostructured Laminate
10.1: Introduction
10.2: Heterostructured Copper-Bronze Laminates
10.3: Hetero-Boundary-Affected Region (HBAR)
10.4: Theoretical Modeling of the Critical HBAR Width
10.5: Mechanical Behaviors Controlled by Interfacial Spacing
10.6: Discussion and Summary
10.7: Materials and Methods.
10.7.1: Material Preparation
10.7.2: Microstructural Observations
10.7.3: DIC Characterization
10.7.4: Mechanical Testing
Chapter 11: In-situ Observation of Dislocation Dynamics Near Heterostructured Boundary
Chapter 12: Hetero-Deformation Induced (HDI) Hardening Does Not Increase Linearly with Strain Gradient
Chapter 13: Extra Strengthening in a Coarse/Ultrafine Grained Laminate: Role of Gradient Boundaries
13.1: Introduction
13.2: Experimental Methods
13.3: Results
13.3.1: Microstructural Heterogeneity and Gradient Boundary
13.3.2: Synergistic Strengthening and Strain Hardening
13.3.3: Height Profile and Strain Gradient Across Boundary
13.3.4: DIC and Strain Gradient Across Boundary
13.4: Discussion
13.4.1: Formation of Strain Gradient Across Gradient Boundary
13.4.2: GNDs Pile-Up Across Gradient Boundary
13.4.3: Extraordinary Strengthening Effects of Gradient Boundary
13.5: Conclusions
Chapter 14: Ductility by Shear Band Delocalization in the Nano-Layer of Gradient Structure
Chapter 15: Heterostructure Induced Dispersive Shear Bands in Heterostructured Cu
Chapter 16: Dense Dispersed Shear Bands in Gradient-Structured Ni
16.1: Introduction
16.2: Experimental Procedures
16.2.1: Materials and Processing
16.2.2: Microstructural Characterization and Mechanical Tests
16.2.3: DIC Strain Characterization
16.3: Results
16.3.1: Surface Roughness of the Gradient Samples
16.3.2: Gradient Microstructure and Microhardness
16.3.3: Strength-Ductility Combination
16.3.4: Dense Dispersed Shear Bands in Nanostructured Layer
16.4: Discussion
16.4.1: Unique Characteristics of Dispersed Shear Bands
16.4.2: Nucleation of Dispersed Shear Bands
16.4.3: Stable Evolution of Dispersed Shear Bands
16.4.4: Microstructure Evolution in Shear Bands.
21.2: Simulation Techniques
21.3: Results and Discussions
21.4: Concluding Remarks
Chapter 22: Strain Hardening Behaviors and Strain Rate Sensitivity of Gradient-Grained Fe under Compression over a Wide Range of Strain Rates
22.1: Introduction
22.2: Experimental Procedures
22.3: Experimental Results and Discussions
22.4: Conclusions
Chapter 23: Mechanical Properties and Deformation Mechanism of Mg-Al-Zn Alloy with Gradient Microstructure in Grain Size and Orientation
23.1: Introduction
23.2: Experimental Procedures
23.3: Results
23.3.1: Gradient Structure in Grain Size and Texture
23.3.2: Mechanical Properties
23.3.3: Repeated Stress Relaxation Tests
23.3.4: Microstructure and Texture
23.3.4.1: Gradient microstructure after SMAT
23.3.4.2: Texture change during tensile deformation
23.3.4.3: Non-basal dislocation observation
23.4: Discussion
23.4.1: Formation of Dual Gradient Microstructure
23.4.2: Influence of Grain Size on Deformation Mechanism
23.4.3: Influence of Orientation and Its Gradient on Deformation Mechanism
23.4.4: Coupling between Size Gradient and Orientation Gradient
23.5: Conclusions
Chapter 24: The Evolution of Strain Gradient and Anisotropy in Gradient-Structured Metal
24.1: Introduction
24.2: Materials and Experimental Procedures
24.2.1: Materials
24.2.2: Microstructural Characterization
24.2.3: Quasi-Static Uniaxial Tensile Tests Coupled with Digital Image Correlation
24.3: Experimental Results and Discussions
24.3.1: Microstructural Characterization and Tensile Properties
24.3.2: Strain Contours and Strain Distributions along the Depth
24.3.3: Evolutions of Strain Gradient and Anisotropy
24.3.4: HDI Hardening
24.4: Concluding Remarks.