Neutron activation and radiation damage assessment for W-Ni-Fe tungsten heavy alloys with variable Ni content

A challenging issue for the magnetic fusion concept of generating nuclear power is the performance of plasma-facing components, particularly in the divertor within the fusion power plant. Tungsten alloys, such as W-TiC, W-La2O3, etc., are the prime candidate structural materials for advanced He-cool...

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Autores principales:	Laila A. El-Guebaly, Wahyu Setyawan, Charles H. Henager Jr, Richard J. Kurtz, G. Robert Odette
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Neutron activation Radiation damage Transmutation products H and He gas production W-Ni-Fe tungsten heavy alloys Tungsten composites Nuclear engineering. Atomic power TK9001-9401
Acceso en línea:	https://doaj.org/article/23e4b9eaae0949af9aed27eb9ad56350
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spelling	oai:doaj.org-article:23e4b9eaae0949af9aed27eb9ad563502021-11-20T05:06:52ZNeutron activation and radiation damage assessment for W-Ni-Fe tungsten heavy alloys with variable Ni content2352-179110.1016/j.nme.2021.101092https://doaj.org/article/23e4b9eaae0949af9aed27eb9ad563502021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2352179121001587https://doaj.org/toc/2352-1791A challenging issue for the magnetic fusion concept of generating nuclear power is the performance of plasma-facing components, particularly in the divertor within the fusion power plant. Tungsten alloys, such as W-TiC, W-La2O3, etc., are the prime candidate structural materials for advanced He-cooled divertors in next-step devices beyond ITER. In recent years, W-Ni-Fe heavy alloys (WHAs) have emerged as more promising alternatives than the above-mentioned alloys. WHAs exhibit superior fracture toughness and better fabricability. However, Ni raises concerns because it may generate an unsafe level of radioactive waste (radwaste). Given the significant promise of WHAs, neutron activation assessment is critically needed, particularly to determine the limit of Ni that can be employed. This is the main purpose of this study. The assessment is provided for disposal option and for recycling alternative of divertors made of WHAs. Additional calculations are performed to obtain the neutron flux and spectrum, transmutation products, and He/H gas production data for a typical divertor design. These additional data are generated to inform future multiscale simulations of microstructure evolution and radiation damage accumulation in WHAs. Furthermore, estimation of atomic displacement damage dose is presented. In the future, the estimated dose should be compared with the more accurate data from the multiscale simulations and revised accordingly.Laila A. El-GuebalyWahyu SetyawanCharles H. Henager JrRichard J. KurtzG. Robert OdetteElsevierarticleNeutron activationRadiation damageTransmutation productsH and He gas productionW-Ni-Fe tungsten heavy alloysTungsten compositesNuclear engineering. Atomic powerTK9001-9401ENNuclear Materials and Energy, Vol 29, Iss , Pp 101092- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Neutron activation Radiation damage Transmutation products H and He gas production W-Ni-Fe tungsten heavy alloys Tungsten composites Nuclear engineering. Atomic power TK9001-9401
spellingShingle	Neutron activation Radiation damage Transmutation products H and He gas production W-Ni-Fe tungsten heavy alloys Tungsten composites Nuclear engineering. Atomic power TK9001-9401 Laila A. El-Guebaly Wahyu Setyawan Charles H. Henager Jr Richard J. Kurtz G. Robert Odette Neutron activation and radiation damage assessment for W-Ni-Fe tungsten heavy alloys with variable Ni content
description	A challenging issue for the magnetic fusion concept of generating nuclear power is the performance of plasma-facing components, particularly in the divertor within the fusion power plant. Tungsten alloys, such as W-TiC, W-La2O3, etc., are the prime candidate structural materials for advanced He-cooled divertors in next-step devices beyond ITER. In recent years, W-Ni-Fe heavy alloys (WHAs) have emerged as more promising alternatives than the above-mentioned alloys. WHAs exhibit superior fracture toughness and better fabricability. However, Ni raises concerns because it may generate an unsafe level of radioactive waste (radwaste). Given the significant promise of WHAs, neutron activation assessment is critically needed, particularly to determine the limit of Ni that can be employed. This is the main purpose of this study. The assessment is provided for disposal option and for recycling alternative of divertors made of WHAs. Additional calculations are performed to obtain the neutron flux and spectrum, transmutation products, and He/H gas production data for a typical divertor design. These additional data are generated to inform future multiscale simulations of microstructure evolution and radiation damage accumulation in WHAs. Furthermore, estimation of atomic displacement damage dose is presented. In the future, the estimated dose should be compared with the more accurate data from the multiscale simulations and revised accordingly.
format	article
author	Laila A. El-Guebaly Wahyu Setyawan Charles H. Henager Jr Richard J. Kurtz G. Robert Odette
author_facet	Laila A. El-Guebaly Wahyu Setyawan Charles H. Henager Jr Richard J. Kurtz G. Robert Odette
author_sort	Laila A. El-Guebaly
title	Neutron activation and radiation damage assessment for W-Ni-Fe tungsten heavy alloys with variable Ni content
title_short	Neutron activation and radiation damage assessment for W-Ni-Fe tungsten heavy alloys with variable Ni content
title_full	Neutron activation and radiation damage assessment for W-Ni-Fe tungsten heavy alloys with variable Ni content
title_fullStr	Neutron activation and radiation damage assessment for W-Ni-Fe tungsten heavy alloys with variable Ni content
title_full_unstemmed	Neutron activation and radiation damage assessment for W-Ni-Fe tungsten heavy alloys with variable Ni content
title_sort	neutron activation and radiation damage assessment for w-ni-fe tungsten heavy alloys with variable ni content
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/23e4b9eaae0949af9aed27eb9ad56350
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Neutron activation and radiation damage assessment for W-Ni-Fe tungsten heavy alloys with variable Ni content

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