A5046066373- Microstructure and mechanical properties
- Metallic Glasses and Amorphous Alloys
- Metal and Thin Film Mechanics
- High-Temperature Coating Behaviors
- Advanced materials and composites
- High Entropy Alloys Studies
- nanoparticles nucleation surface interactions
- Aluminum Alloys Composites Properties
- Diamond and Carbon-based Materials Research
- Electrodeposition and Electroless Coatings
- Glass properties and applications
- Phase-change materials and chalcogenides
- Surface Roughness and Optical Measurements
- Advanced Materials Characterization Techniques
- High-Velocity Impact and Material Behavior
- Copper Interconnects and Reliability
- Surface Treatment and Residual Stress
- Boron and Carbon Nanomaterials Research
- Hydrogen embrittlement and corrosion behaviors in metals
- Electromagnetic wave absorption materials
City University of Hong Kong
2022-2025
Chinese Academy of Sciences
2018-2022
University of Chinese Academy of Sciences
2018-2019
Continuous strengthening and ultrahigh strength are realized in Ni with extremely fine twin thickness.
Metallic materials are mostly susceptible to hydrogen embrittlement (HE), which severely deteriorates their mechanical properties and causes catastrophic failures with poor ductility. In this study, we found that such a long-standing HE problem can be effectively eliminated in the Fex(CrCoNi)1-x face-centered-cubic (fcc) high-entropy alloys (HEAs) by triggering localized segregation of Cr at grain boundaries (GBs). It was revealed increasing Fe concentration from 2.5 25 at. % leads...
Nanocrystalline metallic materials have the merit of high strength but usually suffer from poor ductility and rapid grain coarsening, limiting their practical application. Here, we introduce a core-shell nanostructure in multicomponent alloy to address these challenges simultaneously, achieving tensile 2.65 GPa, large uniform elongation 17%, thermal stability 1173 K. Our strategy relies on an ordered superlattice structure that excels dislocation accumulation, encased by ≈3 nm disordered...
Ultrastrong nanotwinned (NT) metals hold promise for mitigating friction and wear-essential enhancing the energy efficiency longevity of all moving systems. However, optimizing their tribological performance has long suffered from absence wear laws across varying loading scales. Here, we have discovered full-scaling twin lamella spacing (λ)-dependent in NT pure nickel identified critical deformation mechanisms reducing wear. Nanoscale initially increases with decreasing λ, peaking at 20 nm,...