High-Entropy Alloys

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High-Entropy Alloys, Second Edition provides a complete review of the current state of the field of high entropy alloys (HEA). Building upon the first edition, this fully updated release includes new theoretical understandings of these materials, highlighting recent developments on modeling and new classes of HEAs, such as Eutectic HEAs and Dual phase HEAs. Due to their unique properties, high entropy alloys have attracted considerable attention from both academics and technologists. This book presents the fundamental knowledge, the spectrum of various alloy systems and their characteristics, key focus areas, and the future scope of the field in terms of research and technological applications.

Author(s): B S Murty; Jien-Wei Yeh; S Ranganathan; P P Bhattacharjee
Edition: 2
Publisher: Elsevier
Year: 2019

Language: English
Pages: 371
City: Amsterdam

封皮1
Front Matter
Copyright_2019_High-Entropy-Alloys
Copyright
Foreword-for-the-second-edition_2019_High-Entropy-Alloys
Foreword for the second edition
Foreword-for-the-first-edition_2019_High-Entropy-Alloys
Foreword for the first edition
Preface-for-the-second-edition_2019_High-Entropy-Alloys
Preface for the second edition
Preface-for-the-first-edition_2019_High-Entropy-Alloys
Acknowledgments-for-the-second-edition_2019_High-Entropy-Alloys
Acknowledgments for the second edition
Acknowledgments-for-the-first-edition_2019_High-Entropy-Alloys
Acknowledgments for the first edition
List-of-abbreviations_2019_High-Entropy-Alloys
List of abbreviations
1.A brief history of alloys and the birth of high-entropy alloys
A brief history of alloys and the birth of high-entropy alloys
Introduction
The coming of alloys
Special alloys and composites
Intermetallics and quasicrystals
Metallic glasses
Composites
The coming of multicomponent HEAs
Karl Franz Achard
Brian Cantor
Jien-Wei Yeh
Srinivasa Ranganathan
The scope of this book
2.High-entropy alloys basic concepts
High-entropy alloys: basic concepts
Introduction
Classification of phase diagrams and alloy systems
Definition of HEAs
Composition notation
Four core effects of HEAs
High-entropy effect
Severe lattice distortion effect
Sluggish diffusion effect
Cocktail effect
3.Physical metallurgy of high-entropy alloys
Physical metallurgy of high-entropy alloys
Introduction
Diffusion behavior
Phase transformations
Compositional effect
Processing conditions
Predictive approaches for phase stability
Deformation behavior
General experimental observations
Key underlying phenomena
Alloy design and microstructure control
4.Alloy design and phase selection rules in high-entropy alloys
Alloy design and phase selection rules in high-entropy alloys
Introduction
Predicting solid solubility from Hume-Rothery rules
Mutual solubility and phase formation tendency in HEAs
Parametric approaches to predict crystalline solid solution and metallic glass
Criteria for glass formation
Thermodynamic parameters to predict the formation of solid solution and metallic glass
Kinetic approach to predict the formation of solid solution and metallic glass
Pettifor map approach to predict the formation of IM, quasicrystal, and glass
Phase separation approach to find single-phase HEAs
5.Alloy design in 21st century ICME, materials genome, and AI strategies
Alloy design in the 21st century: ICME, materials genome, and artificial intelligence strategies
Introduction
Integrated computational materials engineering
CALPHAD method
Ab initio calculations
MD simulation
MC simulation
Phase-field modeling
The advent of artificial intelligence
6.Synthesis and processing
Synthesis and processing
Introduction
Liquid metallurgy route
Additive manufacturing
Solid state processing route
Carbothermal shock (CTS) synthesis
Combinatorial materials synthesis
7.Solid solution phases and their microstructures in HEAs
Solid solution phases and their microstructures in HEAs
Introduction
Solid solution formation in equiatomic HEAs
Solid solutions with BCC structure
Solid solutions with FCC structure
Mixture of FCC and BCC solid solution phases
Solid solutions with HCP structure
Solid solution formation in nonequiatomic HEAs
Effect of aluminum addition
Effect of transition metals (Co, Cr, Cu, Mo, Ni, Ti and V) and other elements
Microstructure of HEAs
Thermal stability of HEAs
8.Special subgroups of high-entropy alloys
Special subgroups of high-entropy alloys
Introduction
Transition metal HEAs
Eutectic HEAs
Noble metal HEAs
High entropy superalloys
Refractory HEAs
Other HEA families
Intermetallic compounds
B2 phase
L12 phase
Sigma phase
Laves phase
Interstitial compounds (Hagg phases)
Metallic glasses
9.High-entropy alloy coatings
High-entropy alloy coatings
Introduction
Classification of hard coatings
Intrinsic hard coatings
Extrinsic hard coatings
Multilayer coatings
Nanocomposite coatings
Conventional hard coatings
High-entropy thin film coatings
High-entropy thick film coatings
10.High-entropy ceramics
High-entropy ceramics
Introduction
High-entropy nitrides
High-entropy oxides
High-entropy diborides
High-entropy composites
High-entropy cemented carbides and cermets
11.Structural properties
Structural properties
Introduction
Mechanical properties
Room-temperature mechanical properties
Al containing HEAs
FCC HEAs
Refractory HEAs
Eutectic HEAs
Oxide dispersion strengthened HEAs
Nanotwins
High-temperature mechanical properties
Wear properties
Electrochemical properties
Oxidation behavior
12.Functional properties
Functional properties
Introduction
Diffusion barrier properties
Electrical properties
Thermal properties
Magnetic properties
Hydrogen storage properties
Irradiation resistance
Catalytic properties
Thermoelectric properties
13.Applications and future directions
Applications and future directions
Introduction
Goals of property improvement
Advanced applications demanding new materials
Examples of applications
Al5Cr12Fe35Mn28Ni20 HEA
Co1.5CrFeNi1.5Ti0.5 HEA
Profile hardening of Al0.3CrFe1.5MnNi0.5 HEA
HEA coatings for antisticky molds and solar cells
HEA solders for welding hard metal and steel
Eutectic HEAs
HEAs for thin-film resistor
Thermal spray HEA coating for marine structure
Patents on HEAs and related-materials
Future directions
Appendix 1
Appendix 1
Appendix 2
Appendix 2
References
References
Index
Index
A
B
C
D
E
F
G
H
I
L
M
N
O
P
Q
R
S
T
V
W
X
Y
Z
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