A5102021060- High Entropy Alloys Studies
- High-Temperature Coating Behaviors
- Additive Manufacturing Materials and Processes
- Advanced materials and composites
- Metallic Glasses and Amorphous Alloys
- Metal and Thin Film Mechanics
- Aluminum Alloy Microstructure Properties
- High Temperature Alloys and Creep
- Aluminum Alloys Composites Properties
- Microstructure and mechanical properties
- Quasicrystal Structures and Properties
- Electromagnetic wave absorption materials
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Materials Characterization Techniques
- Cellular and Composite Structures
- Intermetallics and Advanced Alloy Properties
- Indoor and Outdoor Localization Technologies
- Cultural Heritage Materials Analysis
- Nuclear Physics and Applications
- Adhesion, Friction, and Surface Interactions
- Power Systems and Renewable Energy
- Electrocatalysts for Energy Conversion
- Smart Grid Energy Management
- Advanced battery technologies research
Taiyuan University of Technology
2015-2025
University of Science and Technology Beijing
2011-2024
Beijing Institute of Technology
2022
University of Hull
2010
The phase-formation rule of high-entropy alloys (HEAs) with different microstructures is discussed, based on the atom-size difference in multicomponent alloys. For single-phase HEA composition AlCoCrFeNi, yielding strengths and fracture at cryogenic temperatures increase distinguishingly, compared to corresponding mechanical properties ambient temperature. However, plasticity 298 77 K changes very gently, while modes are intergranular transgranular, respectively.
Recent studies confirmed that introducing nanoprecipitates as strengthening phase into high-entropy alloys (HEAs) is an extremely effective means to achieve the excellent strength-ductility synergy. In this work, we successfully created a dual nanoscale precipitate structure in Co-free Ni2.5CrFeAl0.3Ti0.2 HEA by controlling thermo-mechanical process. Compared recrystallized alloy, homogeneous L12 precipitates FCC matrix and heterogeneous L12/BCC near grain boundaries were formed aged alloys....
Nickel‐based superalloys with bimodal L1 2 precipitates have been widely used in extreme environments due to their excellent mechanical properties. However, limited studies focused on the deformation behavior and mechanisms under combined high strain rates temperatures. In this study, uniaxial compression experiments were conducted a typical strengthened nickel superalloy over wide range of temperatures (293–1273 K) (1 × 10 − 3 s 1 –5 ) reveal coupling effect temperature rate behavior. The...
Molecular dynamics simulation method was used to study the influence of co-lattice twin boundary (TB) spacing on deformation behavior Al 0.1 CoCrFeNi high-entropy alloy single crystal under uniaxial tension. Studies have shown that there is a “critical distance” between boundaries, and sensitivity two sides change different, evolution mechanism different analyzed from number defects dislocation density. The results show as distance twins decreases, gradually transforms slip accompanied by...
In situ neutron diffraction experiments were conducted to monitor elastic microstrains during tension and creep of a directionally solidified (DS) superalloy PWA1422 single crystal (SX) alloy PWA 1484. The rationale was obtain ins ight on internal stress evolution, thereby improved understanding deformation mechanisms. misfit between the gamma (γ) gamma-prime (γ') phases determined as function temperature deformation. in tensio n test used critical resolved shear ( CRSS) phases. Results show...
The mechanical behaviors of CoCrFeNiAlx (x = 0, 0.3) high-entropy alloys are investigated under quasi-static loading. Evolution phases and microstructures is analyzed by using the x-ray diffraction, scanning electron microscope transmission microscopy. A constitutive model based on crystal plasticity theory presented an explicit algorithm constructed for calculation. dislocation-density-based description hardening used to describe strain behaviors. Constitutive validation performed comparing...