Phase‐Transformation Ductilization of Brittle High‐Entropy Alloys via Metastability Engineering
University of Science and Technology Beijing · Oak Ridge National Laboratory
Abstract
High-entropy alloys (HEAs) in which interesting physical, chemical, and structural properties are being continuously revealed have recently attracted extensive attention. Body-centered cubic (bcc) HEAs, particularly those based on refractory elements are promising for high-temperature application but generally fail by early cracking with limited plasticity at room temperature, which limits their malleability and widespread uses. Here, the "metastability-engineering" strategy is exploited in brittle bcc HEAs via tailoring the stability of the constituent phases, and transformation-induced ductility and work-hardening capability are successfully achieved. This not only sheds new insights on the development of…
Citation impact
- FWCI
- 38.25
- Percentile
- 100%
- References
- 47
Authors
8Topics & keywords
- Materials science
- Metastability
- Transformation (genetics)
- High entropy alloys
- Brittleness
- Thermodynamics
- Engineering physics
- Metallurgy
Funding
- UDU.S. Department of EnergyAwards: AC05-00OR22725, DE-AC05, 00OR22725
- BBattelleAwards: DE-AC05, DE‐AC05‐00OR22725, DE-AC05-00OR22725
- UUT-BattelleAwards: DE-AC05-, AC05-00OR22725
- DFDeutsche ForschungsgemeinschaftAward: DE-AC05-00OR22725
- NNNational Natural Science Foundation of ChinaAwards: DE-AC05-00OR22725, B07003, 51531001, 51371003, 51422101, 51671018
- HEHigher Education Discipline Innovation ProjectAward: B07003
- OOOffice of ScienceAwards: DE-AC05-00OR22725, AC05-00OR22725
- FRFundamental Research Funds for the Central UniversitiesAward: FRF-TP-15-004C1
- PFProgram for Changjiang Scholars and Innovative Research Team in UniversityAward: IRT_14R05
- OROak Ridge National LaboratoryAward: AC05-00OR22725