Results 11 to 20 of about 6,572 (196)
Alloy design for intrinsically ductile refractory high-entropy alloys [PDF]
Journal of Applied Physics, 2016 Refractory high-entropy alloys (RHEAs), comprising group IV (Ti, Zr, Hf), V (V, Nb, Ta), and VI (Cr, Mo, W) refractory elements, can be potentially new generation high-temperature materials.
Ahlström, Johan +8 more
core +3 more sources
Progress of refractory high entropy alloys
Journal of Aeronautical MaterialsThe current research status of refractory high-entropy alloys（RHEAs） is reviewed，the composition design of RHEAs is described，and the effects of metal elements and non-metal elements on the structure and properties of RHEAs are summarized.
WU Hao +4 more
doaj +2 more sources
Ductility Index for Refractory High Entropy Alloys
CrystalsThe big advantage of refractory high entropy alloys (RHEAs) is their strength at high temperatures, but their big disadvantage is their brittleness at room temperature, which prevents their machining. There is a great need to classify the alloys in terms
Ottó K. Temesi +3 more
doaj +2 more sources
High-Temperature Mechanical Properties of NbTaHfTiZrV0.5 Refractory High-Entropy Alloys. [PDF]
Entropy (Basel), 2023 The NbTaHfTiZrV0.5 is a refractory multi-principal-element alloy with high strength and good ductility at room temperature. It is important for possible high-temperature applications to investigate the deformation mechanism of the NbTaHfTiZrV0.5 alloy at different temperatures using tensile tests. In this investigation, the tensile tests were conducted
Liu Z, Shi X, Zhang M, Qiao J.
europepmc +4 more sources
Thermal Softening Measurements of Refractory High-Entropy Alloys. [PDF]
Materials (Basel)Home-built equipment will be presented able to measure the thermal expansion (with a flat indenter) and indentation depth (with a pointed indenter) up to 1100 °C. In dilatometer mode, the allotropic phase transformations can be studied. For hardness, a Rockwell-type measurement is adopted.
Temesi OK, Karacs A, Chinh NQ, Varga LK.
europepmc +3 more sources
Senary refractory high-entropy alloy Cr MoNbTaVW [PDF]
Calphad, 2015 Abstract This paper demonstrates that a senary refractory high-entropy alloy CrxMoNbTaVW can be tailored over a certain range of Cr content with the BCC structure for different microstructures and physical properties, assisted by CALPHAD simulations.
Zhang, B. +3 more
openaire +1 more source
Oxidation Behavior of Refractory AlNbTiVZr0.25 High-Entropy Alloy [PDF]
Materials, 2018 Oxidation behavior of a refractory AlNbTiVZr0.25 high-entropy alloy at 600–900 °C was investigated. At 600–700 °C, two-stage oxidation kinetics was found: Nearly parabolic oxidation (n = 0.46–0.48) at the first stage, transitioned to breakaway oxidation (n = 0.75–0.72) at the second stage.
Nikita Yurchenko +4 more
openaire +2 more sources
Irradiation-Hardening Model of TiZrHfNbMo0.1 Refractory High-Entropy Alloys. [PDF]
Entropy (Basel)In order to find more excellent structural materials resistant to radiation damage, high-entropy alloys (HEAs) have been developed due to their characteristics of limited point defect diffusion such as lattice distortion and slow diffusion. Specially, refractory high-entropy alloys (RHEAs) that can adapt to a high-temperature environment are badly ...
Fan Y, Wang X, Li Y, Lan A, Qiao J.
europepmc +4 more sources
Homogenization of TiVTaNb refractory high-entropy alloy
Journal of Physics: Conference Series, 2022 Homogenization of refractory high entropy alloys (RHEAs) usually requires very high annealing temperatures and long periods due to the high melting temperature of alloying elements and the sluggish diffusion effects. TiVTaNb is a typical RHEA with excellent mechanical properties.
Jingwen Chen +4 more
openaire +1 more source
Temperature-Dependent Configurational Entropy Calculations for Refractory High-Entropy Alloys [PDF]
Journal of Phase Equilibria and Diffusion, 2021 AbstractThe cluster expansion formalism for alloys is used to construct surrogate models for three refractory high-entropy alloys (NbTiVZr, HfNbTaTiZr, and AlHfNbTaTiZr). These cluster expansion models are then used along with Monte Carlo methods and thermodynamic integration to calculate the configurational entropy of these refractory high-entropy ...
Chiraag M Nataraj +2 more
openaire +1 more source