A5031843275- High-Temperature Coating Behaviors
- High Entropy Alloys Studies
- Additive Manufacturing Materials and Processes
- Fusion materials and technologies
- Microstructure and mechanical properties
- Advanced Materials Characterization Techniques
- Nuclear Materials and Properties
- High Temperature Alloys and Creep
- Transgenic Plants and Applications
- Endoplasmic Reticulum Stress and Disease
- Ion-surface interactions and analysis
- Fungal and yeast genetics research
Hunan University
2020-2023
South China University of Technology
2023
High-entropy alloys (HEAs) hold promise as candidate structural materials in future nuclear energy systems. Body-centred cubic V-Ti-Ta-Nb HEAs have received extensive attention due to their excellent mechanical properties. In this work, the Finnis-Sinclair interatomic potential for quaternary has been fitted based on defect properties obtained with density functional theory (DFT) calculations. The new Nb accurately reproduces vacancy formation energy, migration and interstitial energy....
The influence of Al on the defect behaviors AlxCoCrFeNi high-entropy alloys (HEAs) is studied by ab initio calculations. lattice distortion, formation energies, and migration energies were calculated for different concentrations ranging from 0 to 6.25 at. %. First, increase in distortion addition demonstrated, but increment smaller than that predicted atomic size difference constituent elements. Second, although vacancies dumbbells containing are higher, decreases average interstitials,...
High-entropy alloys (HEAs) and medium-entropy (MEAs) have attracted a great deal of attention for developing nuclear materials because their excellent irradiation tolerance. Herein, formation evolution radiation-induced defects in NiCoFe MEA pure Ni are investigated compared using molecular dynamics simulation. It is observed that the defect recombination rate ternary higher than Ni, which mainly because, process cascade collision, energy dissipated through atom displacement decreases with...
High-entropy alloys (HEAs) have received much attention for the development of nuclear materials because their excellent irradiation tolerance. In present study, creation and evolution irradiation-induced defects in NiCoCrFe HEA were investigated by molecular dynamics (MD) simulations to understand mechanisms tolerance compared with bulk Ni. The displacement cascades simulated energies primary knock-on atoms (PKA) ranging from 10 50 keV resistance HEAs. general, there are more displacements...
Irradiation-induced defects frequently impede the slip of dislocations, resulting in a sharp decline performance nuclear reactor structural materials, particularly core materials. In present work, molecular dynamics method is used to investigate interactions between edge dislocations and three typical irradiation-induced (void, Frank loop, stacking fault tetrahedron) with sizes 3 nm, 5 7 nm at different temperatures Fe–10Ni–20Cr alloy. The critical resolved shear stresses (CRSSs) are...