New Advances in High-Entropy Alloys
Zhang, Yong
New Advances in High-Entropy Alloys - Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute 2021 - 1 electronic resource (652 p.)
Open Access
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.
Creative Commons
English
books978-3-03943-620-0 9783039436194 9783039436200
10.3390/books978-3-03943-620-0 doi
Research & information: general
high-entropy alloys alloys design lightweight alloys high entropy alloys elemental addition annealing treatment magnetic property microhardness in situ X-ray diffraction grain refinement thermoelectric properties scandium effect HEA high-entropy alloy CCA compositionally complex alloy phase composition microstructure wear behaviour metal matrix composites mechanical properties high-entropy films phase structures hardness solid-solution interstitial phase transmission electron microscopy compositionally complex alloys CrFeCoNi(Nb,Mo) corrosion sulfuric acid sodium chloride entropy multicomponent differential scanning calorimetry (DSC) specific heat stacking-fault energy density functional theory nanoscaled high-entropy alloys nanodisturbances phase transformations atomic-scale unstable mechanical alloying spark plasma sintering nanoprecipitates annealing phase constituent ion irradiation hardening behavior volume swelling medium entropy alloy high-pressure torsion partial recrystallization tensile strength high-entropy alloys (HEAs) phase constitution magnetic properties Curie temperature phase transition precipitation strengthening coherent microstructure conventional alloys nanocrystalline materials high entropy alloy sputtering deformation and fracture strain rate sensitivity liquid phase separation immiscible alloys HEAs multicomponent alloys miscibility gaps multi-principal element alloys MPEAs complex concentrated alloys CCAs electron microscopy plasticity methods plasticity serration behavior alloy design structural metals CALPHAD solid-solution alloys lattice distortion phase transformation (CoCrFeNi)100−xMox alloys corrosion behavior gamma double prime nanoparticles elemental partitioning atom probe tomography first-principles calculations bcc phase stability composition scanning laser cladding high-entropy alloy coating AZ91D magnesium alloy wear kinetics deformation thermal expansion diamond composite powder metallurgy additive manufacturing low-activation high-entropy alloys (HEAs) high-temperature structural alloys microstructures compressive properties heat-softening resistance tensile creep behavior microstructural evolution creep mechanism first-principles calculation maximum entropy elastic property mechanical property recrystallization laser metal deposition elemental powder graded material refractory high-entropy alloys elevated-temperature yield strength solid solution strengthening effect bulk metallic glass complex stress field shear band flow serration deformation mechanism ab initio configuration entropy matrix formulation cluster expansion cluster variation method monte carlo thermodynamic integration (AlCrTiZrV)-Six-N films nanocomposite structure refractory high entropy alloys medium entropy alloys, mechanical properties thin films deformation behaviors nanocrystalline coating interface mechanical characterization high pressure polymorphic transition solidification eutectic dendrites hierarchical nanotwins precipitation kinetics strengthening mechanisms elongation prediction welding Hall–Petch (H–P) effect lattice constants high-entropy ceramic solid-state diffusion phase evolution mechanical behaviors high-entropy film low-activation alloys
New Advances in High-Entropy Alloys - Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute 2021 - 1 electronic resource (652 p.)
Open Access
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.
Creative Commons
English
books978-3-03943-620-0 9783039436194 9783039436200
10.3390/books978-3-03943-620-0 doi
Research & information: general
high-entropy alloys alloys design lightweight alloys high entropy alloys elemental addition annealing treatment magnetic property microhardness in situ X-ray diffraction grain refinement thermoelectric properties scandium effect HEA high-entropy alloy CCA compositionally complex alloy phase composition microstructure wear behaviour metal matrix composites mechanical properties high-entropy films phase structures hardness solid-solution interstitial phase transmission electron microscopy compositionally complex alloys CrFeCoNi(Nb,Mo) corrosion sulfuric acid sodium chloride entropy multicomponent differential scanning calorimetry (DSC) specific heat stacking-fault energy density functional theory nanoscaled high-entropy alloys nanodisturbances phase transformations atomic-scale unstable mechanical alloying spark plasma sintering nanoprecipitates annealing phase constituent ion irradiation hardening behavior volume swelling medium entropy alloy high-pressure torsion partial recrystallization tensile strength high-entropy alloys (HEAs) phase constitution magnetic properties Curie temperature phase transition precipitation strengthening coherent microstructure conventional alloys nanocrystalline materials high entropy alloy sputtering deformation and fracture strain rate sensitivity liquid phase separation immiscible alloys HEAs multicomponent alloys miscibility gaps multi-principal element alloys MPEAs complex concentrated alloys CCAs electron microscopy plasticity methods plasticity serration behavior alloy design structural metals CALPHAD solid-solution alloys lattice distortion phase transformation (CoCrFeNi)100−xMox alloys corrosion behavior gamma double prime nanoparticles elemental partitioning atom probe tomography first-principles calculations bcc phase stability composition scanning laser cladding high-entropy alloy coating AZ91D magnesium alloy wear kinetics deformation thermal expansion diamond composite powder metallurgy additive manufacturing low-activation high-entropy alloys (HEAs) high-temperature structural alloys microstructures compressive properties heat-softening resistance tensile creep behavior microstructural evolution creep mechanism first-principles calculation maximum entropy elastic property mechanical property recrystallization laser metal deposition elemental powder graded material refractory high-entropy alloys elevated-temperature yield strength solid solution strengthening effect bulk metallic glass complex stress field shear band flow serration deformation mechanism ab initio configuration entropy matrix formulation cluster expansion cluster variation method monte carlo thermodynamic integration (AlCrTiZrV)-Six-N films nanocomposite structure refractory high entropy alloys medium entropy alloys, mechanical properties thin films deformation behaviors nanocrystalline coating interface mechanical characterization high pressure polymorphic transition solidification eutectic dendrites hierarchical nanotwins precipitation kinetics strengthening mechanisms elongation prediction welding Hall–Petch (H–P) effect lattice constants high-entropy ceramic solid-state diffusion phase evolution mechanical behaviors high-entropy film low-activation alloys