Table of Contents

Cover image

Title page

Copyright

Foreword

Preface

Acknowledgements

Chapter 1. A Brief History of Alloys and the Birth of High-Entropy Alloys

1.1 Introduction

1.2 The Coming of Alloys

1.3 Special Alloys

1.4 The Coming of Multicomponent Heas

1.5 The Scope of This Book

Chapter 2. High-Entropy Alloys: Basic Concepts

2.1 Introduction

2.2 Classification of Phase Diagrams and Alloy Systems

2.3 Definition of HEAs

2.4 Composition Notation

2.5 Four Core Effects of HEAs

Chapter 3. Phase Selection in High-Entropy Alloys

3.1 Predicting Solid Solubility from Hume-Rothery Rules

3.2 Mutual Solubility and Phase Formation Tendency in HEAs

3.3 Parametric Approaches to Predict Crystalline Solid Solution and Metallic Glass

3.4 Pettifor Map Approach to Predict the Formation of Intermetallic Compound, Quasicrystal, and Glass

3.5 Phase Separation Approach to Find Single-Phase HEAs

Chapter 4. Alloy Design in the Twenty-First Century: ICME and Materials Genome Strategies

4.1 Introduction

4.2 Integrated Computational Materials Engineering

Chapter 5. Synthesis and Processing

5.1 Introduction

5.2 Melting and Casting Route

5.3 Solid-State Processing Route

5.4 HEA and HEA-Based Coatings

5.5 Combinatorial Materials Synthesis

Chapter 6. High-Entropy Alloy Solid Solutions

6.1 Introduction

6.2 Solid Solution Formation in Equiatomic HEAs

6.3 Solid Solution Formation in Nonequiatomic HEAs

6.4 Microstructure of HEAs

6.5 Role of Sluggish Diffusion in Phase Evolution of HEAs

6.6 Thermal Stability of HEAs

Chapter 7. Intermetallics, Interstitial Compounds and Metallic Glasses in High-Entropy Alloys

7.1 Introduction

7.2 Intermetallic Compounds

7.3 Interstitial Compounds (Hagg Phases)

7.4 Metallic Glasses

Chapter 8. Structural Properties

8.1 Introduction

8.2 Mechanical Properties

8.3 Wear Properties

8.4 Electrochemical Properties

8.5 Oxidation Behavior

Chapter 9. Functional Properties

9.1 Introduction

9.2 Diffusion Barrier Properties

9.3 Electrical Properties

9.4 Thermal Properties

9.5 Magnetic Properties

9.6 Hydrogen Storage Properties

9.7 Irradiation Resistance

9.8 Catalytic Properties

Chapter 10. Applications and Future Directions

10.1 Introduction

10.2 Goals of Property Improvement

10.3 Advanced Applications Demanding New Materials

10.4 Examples of Applications

10.5 Patents on HEAs and Related Materials

10.6 Future Directions

References

Appendix 1

Appendix 2

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