Enhanced strength–ductility synergy in ultrafine-grained eutectic high-entropy alloys by inheriting microstructural lamellae
Shanghai University · University of Tennessee at Knoxville
Abstract
Abstract Realizing improved strength–ductility synergy in eutectic alloys acting as in situ composite materials remains a challenge in conventional eutectic systems, which is why eutectic high-entropy alloys (EHEAs), a newly-emerging multi-principal-element eutectic category, may offer wider in situ composite possibilities. Here, we use an AlCoCrFeNi 2.1 EHEA to engineer an ultrafine-grained duplex microstructure that deliberately inherits its composite lamellar nature by tailored thermo-mechanical processing to achieve property combinations which are not accessible to previously-reported reinforcement methodologies. The as-prepared samples exhibit hierarchically-structural heterogeneity due to phase…
Citation impact
- FWCI
- 51.42
- Percentile
- 100%
- References
- 36
Authors
10Topics & keywords
- Eutectic system
- Materials science
- Lamellar structure
- Ductility (Earth science)
- Microstructure
- Composite number
- Deformation mechanism
- Composite material