The effects of tantalum addition on the microtexture and mechanical behaviour of tungsten for ITER applications
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.9/2956 |
Resumo: | Tungsten (W) and its alloys are very promising materials for producing plasma-facing components (PFCs) in the fusion power reactors of the near future, even as a structural part in them. However, whereas the properties of pure tungsten are suitable for a PFC, its structural applications are still limited due to its low toughness, ductile to brittle transition temperature and recrystallization behaviour. Therefore, many efforts have been made to improve its performance by alloying tungsten with other elements. Hence, in this investigation, the thermo-mechanical performance of two new tungsten-tantalum materials has been evaluated. Materials with W–5wt.%Ta and W–15wt.%Ta were processed by mechanical alloying (MA) and later consolidation by hot isostatic pressing (HIP), with distinct settings for each composition. Thus, it was possible to determine the relationship between the microstructure and the addition of Ta with the macroscopic mechanical properties. These were measured by means of hardness, flexural strength and fracture toughness, in the temperature range of 300–1473 K. The microstructure and the fracture surfaces features of the tested materials were analysed by Field Emission Scanning Electron Microscopy (FESEM). |
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The effects of tantalum addition on the microtexture and mechanical behaviour of tungsten for ITER applicationsTungstenTantalumMechanical propertiesHigh temperatureNuclear applicationsTungsten (W) and its alloys are very promising materials for producing plasma-facing components (PFCs) in the fusion power reactors of the near future, even as a structural part in them. However, whereas the properties of pure tungsten are suitable for a PFC, its structural applications are still limited due to its low toughness, ductile to brittle transition temperature and recrystallization behaviour. Therefore, many efforts have been made to improve its performance by alloying tungsten with other elements. Hence, in this investigation, the thermo-mechanical performance of two new tungsten-tantalum materials has been evaluated. Materials with W–5wt.%Ta and W–15wt.%Ta were processed by mechanical alloying (MA) and later consolidation by hot isostatic pressing (HIP), with distinct settings for each composition. Thus, it was possible to determine the relationship between the microstructure and the addition of Ta with the macroscopic mechanical properties. These were measured by means of hardness, flexural strength and fracture toughness, in the temperature range of 300–1473 K. The microstructure and the fracture surfaces features of the tested materials were analysed by Field Emission Scanning Electron Microscopy (FESEM).ElsevierRepositório do LNEGTejado, ElenaCarvalho, Patricia AlmeidaMunoz, A.Dias, MartaCorreia, J.B.Mardolcar, U. V.Pastor, Jose Ygnacio2016-05-02T10:58:49Z2015-01-01T00:00:00Z2015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/2956engTejado, E.; Carvalho, P.A.; Munoz, A.; Dias, M.; Correia, J.B.; Mardolcar, U.V.; Pastor, J.Y. - The effects of tantalum addition on the microtexture and mechanical behaviour of tungsten for ITER applications. In: Journal of Nuclear Materials, 2015, Vol. 467, p. 949-9550022-311510.1016/j.jnucmat.2015.10.034info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-09-06T12:28:15Zoai:repositorio.lneg.pt:10400.9/2956Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:36:07.276822Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
The effects of tantalum addition on the microtexture and mechanical behaviour of tungsten for ITER applications |
title |
The effects of tantalum addition on the microtexture and mechanical behaviour of tungsten for ITER applications |
spellingShingle |
The effects of tantalum addition on the microtexture and mechanical behaviour of tungsten for ITER applications Tejado, Elena Tungsten Tantalum Mechanical properties High temperature Nuclear applications |
title_short |
The effects of tantalum addition on the microtexture and mechanical behaviour of tungsten for ITER applications |
title_full |
The effects of tantalum addition on the microtexture and mechanical behaviour of tungsten for ITER applications |
title_fullStr |
The effects of tantalum addition on the microtexture and mechanical behaviour of tungsten for ITER applications |
title_full_unstemmed |
The effects of tantalum addition on the microtexture and mechanical behaviour of tungsten for ITER applications |
title_sort |
The effects of tantalum addition on the microtexture and mechanical behaviour of tungsten for ITER applications |
author |
Tejado, Elena |
author_facet |
Tejado, Elena Carvalho, Patricia Almeida Munoz, A. Dias, Marta Correia, J.B. Mardolcar, U. V. Pastor, Jose Ygnacio |
author_role |
author |
author2 |
Carvalho, Patricia Almeida Munoz, A. Dias, Marta Correia, J.B. Mardolcar, U. V. Pastor, Jose Ygnacio |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Repositório do LNEG |
dc.contributor.author.fl_str_mv |
Tejado, Elena Carvalho, Patricia Almeida Munoz, A. Dias, Marta Correia, J.B. Mardolcar, U. V. Pastor, Jose Ygnacio |
dc.subject.por.fl_str_mv |
Tungsten Tantalum Mechanical properties High temperature Nuclear applications |
topic |
Tungsten Tantalum Mechanical properties High temperature Nuclear applications |
description |
Tungsten (W) and its alloys are very promising materials for producing plasma-facing components (PFCs) in the fusion power reactors of the near future, even as a structural part in them. However, whereas the properties of pure tungsten are suitable for a PFC, its structural applications are still limited due to its low toughness, ductile to brittle transition temperature and recrystallization behaviour. Therefore, many efforts have been made to improve its performance by alloying tungsten with other elements. Hence, in this investigation, the thermo-mechanical performance of two new tungsten-tantalum materials has been evaluated. Materials with W–5wt.%Ta and W–15wt.%Ta were processed by mechanical alloying (MA) and later consolidation by hot isostatic pressing (HIP), with distinct settings for each composition. Thus, it was possible to determine the relationship between the microstructure and the addition of Ta with the macroscopic mechanical properties. These were measured by means of hardness, flexural strength and fracture toughness, in the temperature range of 300–1473 K. The microstructure and the fracture surfaces features of the tested materials were analysed by Field Emission Scanning Electron Microscopy (FESEM). |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-01-01T00:00:00Z 2015-01-01T00:00:00Z 2016-05-02T10:58:49Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.9/2956 |
url |
http://hdl.handle.net/10400.9/2956 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Tejado, E.; Carvalho, P.A.; Munoz, A.; Dias, M.; Correia, J.B.; Mardolcar, U.V.; Pastor, J.Y. - The effects of tantalum addition on the microtexture and mechanical behaviour of tungsten for ITER applications. In: Journal of Nuclear Materials, 2015, Vol. 467, p. 949-955 0022-3115 10.1016/j.jnucmat.2015.10.034 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799130227118440448 |