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- Title
A quinary WTaCrVHf nanocrystalline refractory high-entropy alloy withholding extreme irradiation environments.
- Authors
El Atwani, O.; Vo, H. T.; Tunes, M. A.; Lee, C.; Alvarado, A.; Krienke, N.; Poplawsky, J. D.; Kohnert, A. A.; Gigax, J.; Chen, W.-Y.; Li, M.; Wang, Y. Q.; Wróbel, J. S.; Nguyen-Manh, D.; Baldwin, J. K. S.; Tukac, O. U.; Aydogan, E.; Fensin, S.; Martinez, E.
- Abstract
In the quest of new materials that can withstand severe irradiation and mechanical extremes for advanced applications (e.g. fission & fusion reactors, space applications, etc.), design, prediction and control of advanced materials beyond current material designs become paramount. Here, through a combined experimental and simulation methodology, we design a nanocrystalline refractory high entropy alloy (RHEA) system. Compositions assessed under extreme environments and in situ electron-microscopy reveal both high thermal stability and radiation resistance. We observe grain refinement under heavy ion irradiation and resistance to dual-beam irradiation and helium implantation in the form of low defect generation and evolution, as well as no detectable grain growth. The experimental and modeling results—showing a good agreement—can be applied to design and rapidly assess other alloys subjected to extreme environmental conditions. Refractory high entropy alloys (RHEAs) have recently been developed in the context of high-temperature and severe environmental applications. Here the authors, by combining simulation and experiments, develop an irradiation resistant, thermally stable, and strong RHEA for nuclear application.
- Subjects
EXTREME environments; FUSION reactors; HEAT radiation &; absorption; REFRACTORY materials; IRRADIATION; GRAIN refinement; MAGNETIC entropy
- Publication
Nature Communications, 2023, Vol 14, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-023-38000-y