A5027297848- High Entropy Alloys Studies
- High-Temperature Coating Behaviors
- Metallic Glasses and Amorphous Alloys
- Additive Manufacturing Materials and Processes
- Advanced materials and composites
- Aluminum Alloys Composites Properties
- Metal and Thin Film Mechanics
- Microstructure and mechanical properties
- High Temperature Alloys and Creep
- Glass properties and applications
- Advanced Materials Characterization Techniques
- Fatigue and fracture mechanics
- Intermetallics and Advanced Alloy Properties
- Microstructure and Mechanical Properties of Steels
- Advanced ceramic materials synthesis
- Aluminum Alloy Microstructure Properties
- Material Dynamics and Properties
- Phase-change materials and chalcogenides
- Magnesium Alloys: Properties and Applications
- Titanium Alloys Microstructure and Properties
- Hydrogen embrittlement and corrosion behaviors in metals
- Electromagnetic wave absorption materials
- Nuclear Materials and Properties
- Shape Memory Alloy Transformations
- Surface Treatment and Residual Stress
University of Tennessee at Knoxville
2016-2025
Knoxville College
2015-2024
University of Tennessee System
2024
Shenyang University of Technology
2024
Taiyuan University of Technology
2021-2022
Oak Ridge National Laboratory
2009-2021
Lancaster University
2021
Dalian University of Technology
2021
Texas A&M University
2019
California Institute of Technology
2008-2018
Abstract Realizing improved strength–ductility synergy in eutectic alloys acting as situ composite materials remains a challenge conventional systems, which is why high-entropy (EHEAs), newly-emerging multi-principal-element category, may offer wider possibilities. Here, we use an AlCoCrFeNi 2.1 EHEA to engineer ultrafine-grained duplex microstructure that deliberately inherits its lamellar nature by tailored thermo-mechanical processing achieve property combinations are not accessible...
The alloy-design strategy of combining multiple elements in near-equimolar ratios has shown great potential for producing exceptional engineering materials, often known as ‘high-entropy alloys’. Understanding the elemental distribution, and, thus, evolution configurational entropy during solidification, is undertaken present study using Al1.3CoCrCuFeNi model alloy. Here we show that, even when material undergoes segregation, precipitation, chemical ordering and spinodal decomposition, a...
Similar to conventional materials, most multicomponent high-entropy alloys (HEAs) lose ductility as they gain strength. In this study, we controllably introduced gradient nanoscaled dislocation cell structures in a stable single-phase HEA with face-centered cubic structure, thus resulting enhanced strength without apparent loss of ductility. Upon application strain, the sample-level structural induces progressive formation high density tiny stacking faults (SFs) and twins, nucleating from...
In human-made malleable materials, microdamage such as cracking usually limits material lifetime. Some biological composites, bone, have hierarchical microstructures that tolerate cracks but cannot withstand high elongation. We demonstrate a directionally solidified eutectic high-entropy alloy (EHEA) successfully reconciles crack tolerance and The has hierarchically organized herringbone structure enables bionic-inspired buffering. This effect guides stable, persistent crystallographic...
High strength of materials usually comes with low ductility due to the lost or short-lived strain hardening. Here, we uncover a sequentially-activated multistage hardening (SMSH) that allows for sustained and effective strain-hardening capability in strong ultrafine-grained eutectic high-entropy alloy (EHEA). Consequently, exceptional is realized an EHEA, accompanied high ultimate strength. We demonstrate SMSH derived from coordinated three-level design on structural heterogeneity,...