A quinary WTaCrVHf nanocrystalline refractory high-entropy alloy withholding extreme irradiation environments.

Autor: El Atwani O; Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM, USA. osman@lanl.gov., Vo HT; Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM, USA., Tunes MA; Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM, USA., Lee C; Center for Integrated Nanotechnology, Los Alamos National Laboratory, Los Alamos, NM, USA.; Department of Materials and Mechanical Engineering, Auburn University, Auburn, AL, USA., Alvarado A; Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, USA.; Departments of Mechanical Engineering and Materials Science and Engineering, Clemson University, Clemson, SC, USA., Krienke N; Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, USA., Poplawsky JD; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA., Kohnert AA; Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM, USA., Gigax J; Center for Integrated Nanotechnology, Los Alamos National Laboratory, Los Alamos, NM, USA., Chen WY; Division of Nuclear Engineering, Argonne National Laboratory, Lemon, IL, USA., Li M; Division of Nuclear Engineering, Argonne National Laboratory, Lemon, IL, USA., Wang YQ; Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM, USA., Wróbel JS; Faculty of Materials Science and Engineering, Warsaw University of Technology, ul. Wołoska, 02-507, Warsaw, Poland., Nguyen-Manh D; Culham Center for Fusion Energy, United Kingdom Atomic Energy Authority, Abingdon, OX14 3DB, UK.; Department of Materials, University of Oxford, Oxford, OX1 3PH, UK., Baldwin JKS; Center for Integrated Nanotechnology, Los Alamos National Laboratory, Los Alamos, NM, USA., Tukac OU; Metallurgical and Materials Engineering, Middle East Technical University, Ankara, Turkey., Aydogan E; Metallurgical and Materials Engineering, Middle East Technical University, Ankara, Turkey., Fensin S; Center for Integrated Nanotechnology, Los Alamos National Laboratory, Los Alamos, NM, USA., Martinez E; Departments of Mechanical Engineering and Materials Science and Engineering, Clemson University, Clemson, SC, USA.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2023 May 02; Vol. 14 (1), pp. 2516. Date of Electronic Publication: 2023 May 02.
DOI: 10.1038/s41467-023-38000-y
Abstrakt: 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.
(© 2023. This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply.)
Databáze: MEDLINE
Externí odkaz: