Microstructural origins of high strength and high ductility in an AlCoCrFeNi2.1 eutectic high-entropy alloy
Nanjing University of Science and Technology · Dalian University of Technology
Abstract
Recent studies indicate that eutectic high-entropy alloys can simultaneously possess high strength and high ductility, which have potential applications in industrial fields. Nevertheless, microstructural origins of the excellent strength–ductility combination remain unclear. In this study, an AlCoCrFeNi2.1 eutectic high-entropy alloy was prepared with face-centered cubic (FCC)(L12)/body-centered-cubic (BCC)(B2) modulated lamellar structures and a remarkable combination of ultimate tensile strength (1351 MPa) and ductility (15.4%) using the classical casting technique. Post-deformation transmission electron microscopy revealed that the FCC(L12) phase was deformed in a matter of planar dislocation slip, with a…
Citation impact
- FWCI
- 30.11
- Percentile
- 100%
- References
- 43
Authors
8Topics & keywords
- Materials science
- Eutectic system
- High entropy alloys
- Alloy
- Ductility (Earth science)
- Stacking-fault energy
- Brittleness
- Ultimate tensile strength