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New Advances in High-Entropy Alloys
Yong Zhang (editor)
2021
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In recent years, people have tended to adjust the degree of order/disorder to explore new materials. The degree of order/disorder can be measured by entropy, and it can be divided into two parts: topological disordering and chemical disordering. The former mainly refers to order in the spatial configuration, e.g., amorphous alloys which show short-range ordering but without long-range ordering, while the latter mainly refers to the order in the chemical occupancy, that is to say, the components can replace each other, and typical representatives are high-entropy alloy (HEAs). HEAs, in sharp contrast to traditional alloys based on one or two principal elements, have one striking characteristic: their unusually high entropy of mixing. They have not received much noticed until the review paper entitled “Microstructure and Properties of High-Entropy Alloys” was published in 2014 in the journal of Progress in Materials Science. Numerous reports have shown they exhibit five recognized performance characteristics, namely, strength–plasticity trade-off breaking, irradiation tolerance, corrosion resistance, high-impact toughness within a wider temperature range, and high thermal stability. So far, the development of HEAs has gone through three main stages: 1. Quinary equal-atomic single-phase solid solution alloys; 2. Quaternary or quinary non-equal-atomic multiphase alloys; 3. Medium-entropy alloys, high-entropy fibers, high-entropy films, lightweight HEAs, etc. Nowadays, more in-depth research on high-entropy alloys is urgently needed.
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Keywords
- (AlCrTiZrV)-Six-N films
- (CoCrFeNi)100−xMox alloys
- ab initio
- additive manufacturing
- alloy design
- alloys design
- annealing
- annealing treatment
- atom probe tomography
- atomic-scale unstable
- AZ91D magnesium alloy
- bcc
- bulk metallic glass
- CALPHAD
- cca
- CCAs
- cluster expansion
- cluster variation method
- coating
- coherent microstructure
- complex concentrated alloys
- complex stress field
- composite
- composition scanning
- compositionally complex alloy
- compositionally complex alloys
- compressive properties
- configuration entropy
- conventional alloys
- Corrosion
- corrosion behavior
- creep mechanism
- CrFeCoNi(Nb,Mo)
- curie temperature
- deformation
- deformation and fracture
- deformation behaviors
- deformation mechanism
- density functional theory
- diamond
- differential scanning calorimetry (DSC)
- elastic property
- Electron microscopy
- elemental addition
- elemental partitioning
- elemental powder
- elevated-temperature yield strength
- elongation prediction
- Entropy
- eutectic dendrites
- first-principles calculation
- First-principles calculations
- flow serration
- gamma double prime nanoparticles
- graded material
- grain refinement
- Hall–Petch (H–P) effect
- hardening behavior
- hardness
- HEA
- HEAs
- heat-softening resistance
- hierarchical nanotwins
- high entropy alloy
- high entropy alloys
- high pressure
- high-entropy alloy
- high-entropy alloy coating
- high-entropy alloys
- high-entropy alloys (HEAs)
- high-entropy ceramic
- high-entropy film
- high-entropy films
- high-pressure torsion
- high-temperature structural alloys
- immiscible alloys
- in situ X-ray diffraction
- interface
- interstitial phase
- ion irradiation
- kinetics
- laser cladding
- laser metal deposition
- lattice constants
- lattice distortion
- lightweight alloys
- liquid phase separation
- low-activation alloys
- low-activation high-entropy alloys (HEAs)
- Magnetic properties
- magnetic property
- matrix formulation
- Maximum entropy
- mechanical alloying
- mechanical behaviors
- mechanical characterization
- Mechanical properties
- Mechanical Property
- medium entropy alloy
- medium entropy alloys, mechanical properties
- metal matrix composites
- microhardness
- microstructural evolution
- Microstructure
- microstructures
- miscibility gaps
- Monte Carlo
- MPEAs
- multi-principal element alloys
- multicomponent
- multicomponent alloys
- nanocomposite structure
- nanocrystalline
- Nanocrystalline Materials
- nanodisturbances
- nanoprecipitates
- nanoscaled high-entropy alloys
- partial recrystallization
- phase composition
- phase constituent
- phase constitution
- phase evolution
- phase stability
- phase structures
- phase transformation
- phase transformations
- phase transition
- Plasticity
- plasticity methods
- polymorphic transition
- powder metallurgy
- precipitation
- precipitation kinetics
- recrystallization
- Reference, information & interdisciplinary subjects
- refractory high entropy alloys
- refractory high-entropy alloys
- Research & information: general
- scandium effect
- serration behavior
- shear band
- sodium chloride
- solid solution strengthening effect
- solid-solution
- solid-solution alloys
- solid-state diffusion
- solidification
- spark plasma sintering
- specific heat
- sputtering
- stacking-fault energy
- strain rate sensitivity
- strengthening
- strengthening mechanisms
- structural metals
- sulfuric acid
- tensile creep behavior
- tensile strength
- thermal expansion
- thermodynamic Integration
- thermoelectric properties
- Thin films
- transmission electron microscopy
- volume swelling
- wear
- wear behaviour
- Welding
Links
DOI: 10.3390/books978-3-03943-620-0Editions