Deformation Behaviors in Single BCC‐Phase Refractory Multi‐Principal Element Alloys under Dynamic Conditions
The mechanical behavior and microstructural evolution of a BCC-phase NbTaTiV refractory multi-principal element alloy (RMPEA) is studied over a wide range of strain rates (10<sup>-3</sup> to 10<sup>3</sup> s<sup>-1</sup>) and temperatures (room temperature to 850 °C). The mechanical property of present RMPEA shows less strain-rate dependence and strong resistance to softening at high temperatures. Under high strain-rate loading, the formation of thin type-I twins is observed, which could lead to an increase in strain-hardening rates. However, this hardening mechanism competes with adiabatic heating effects, resulting in the deterrence of strain-hardening behaviors. In contrast, substantial strain-hardening occurs at cryogenic temperatures due to the formation of twins, which act as stronger barriers to dislocation motion and interact with each other. To further understand the different strain-hardening behaviors, density functional theory (DFT) calculations predict relatively low stacking fault energies and high twinning stress for the NbTaTiV RMPEA.
Authors
- Leeseung Kang (ORCID: https://orcid.org/0000-0003-2263-3215)
- Barton C. Prorok (ORCID: https://orcid.org/0000-0001-8062-1111)
- Aomin Huang (ORCID: https://orcid.org/0009-0002-1904-9747)
- Deva Prasaad Neelakandan (ORCID: https://orcid.org/0000-0003-1502-1034)
- Saryu Fensin (ORCID: https://orcid.org/0000-0001-8135-5353)
- Ke An (ORCID: https://orcid.org/0000-0002-6093-429X)
- Juntan Li (ORCID: https://orcid.org/0000-0002-2976-5969)
- Haixuan Xu (ORCID: https://orcid.org/0000-0001-6460-6149)
- Shuozhi Xu (ORCID: https://orcid.org/0000-0003-0121-9445)
- Marc A. Meyers (ORCID: https://orcid.org/0000-0003-1698-5396)
- Dongyue Xie (ORCID: https://orcid.org/0000-0001-6280-5451)
- Dong‐Joo Kim (ORCID: https://orcid.org/0000-0001-5013-4005)
- Chia‐Yi Wu (ORCID: https://orcid.org/0000-0003-1756-557X)
- Nan Li (ORCID: https://orcid.org/0000-0002-8248-9027)
- Chan-Ho Lee (ORCID: https://orcid.org/0000-0002-0581-392X)
- Gian Song (ORCID: https://orcid.org/0000-0001-8406-4498)
- Peter K. Liaw
- George T. Gray
- Yi‐Chia Chou (ORCID: https://orcid.org/0000-0002-7775-2927)
Institutions
- Oak Ridge National Laboratory (US)
- Los Alamos National Laboratory (US)
- National Yang Ming Chiao Tung University (TW)
- University of San Diego (US)
- Kongju National University (KR)
- University of California San Diego (US)
- Center for Integrated Nanotechnologies (US)
- University of Tennessee at Knoxville (US)
- Auburn University (US)
- University of Oklahoma (US)
- Korea Institute of Industrial Technology (KR)
Publication Details
- Journal
- Advanced Science
- Published
- 2025-08-04
- DOI
- https://doi.org/10.1002/advs.202508180
- Citations
- 5
- Primary Topic
- High Entropy Alloys Studies
- Type
- article
- Field-Weighted Citation Impact
- 3.57
Funders
- National Science Foundation
- U.S. Department of Energy
- Consejería de Economía y Hacienda
- Center for Integrated Nanotechnologies
- Tennessee Higher Education Commission
- National Research Foundation
- Ministry of Environment and Forests
- Ministry of Trade, Industry and Energy
- National Research Foundation of Korea
- Ministry of Science and ICT, South Korea
- Office of Science
- National Nuclear Security Administration
- Division of Materials Research
- Laboratory Directed Research and Development
- Army Research Office
- Los Alamos National Laboratory