The effects of tantalum addition on the microtexture and mechanical behaviour of tungsten for ITER applications

Tejado Garrido, Elena Maria; Carvalho, P.A.; Muñoz, A.; Dias, M.; Correia, J.B.; Mardolcar, U.V. y Pastor Caño, Jose Ignacio (2015). The effects of tantalum addition on the microtexture and mechanical behaviour of tungsten for ITER applications. "Journal of Nuclear Materials", v. 467 ; pp. 949-955. ISSN 0022-3115. https://doi.org/10.1016/j.jnucmat.2015.10.034.

Descripción

Título: The effects of tantalum addition on the microtexture and mechanical behaviour of tungsten for ITER applications
Autor/es:
  • Tejado Garrido, Elena Maria
  • Carvalho, P.A.
  • Muñoz, A.
  • Dias, M.
  • Correia, J.B.
  • Mardolcar, U.V.
  • Pastor Caño, Jose Ignacio
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Nuclear Materials
Fecha: Diciembre 2015
Volumen: 467
Materias:
Palabras Clave Informales: Tungsten; Tantalum; Fracture toughness; Mechanical properties; High temperature; Nuclear applications
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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 We5wt.%Ta and We15wt.%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 300e1473 K. The microstructure and the fracture surfaces features of the tested materials were analysed by Field Emission Scanning Electron Microscopy (FESEM).

Más información

ID de Registro: 40472
Identificador DC: http://oa.upm.es/40472/
Identificador OAI: oai:oa.upm.es:40472
Identificador DOI: 10.1016/j.jnucmat.2015.10.034
URL Oficial: http://www.sciencedirect.com/science/article/pii/S0022311515302816
Depositado por: Memoria Investigacion
Depositado el: 31 May 2016 18:16
Ultima Modificación: 31 May 2016 18:16
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