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Memorias de investigación
Ponencias en congresos:
Manufacturing of self-passivating tungsten based alloys by different powder metallurgical routes
Año:2015
Áreas de investigación
  • Ingenierías
Datos
Descripción
Self-passivating tungsten based alloys will provide a major safety advantage compared to pure tungsten when used as first wall armour of future fusion reactors, due to the formation of a protective oxide layer which prevents the formation of volatile and radioactive WO3 in case of a loss of coolant accident with simultaneous air ingress. Bulk WCr10Ti2 alloys were manufactured by two different powder metallurgical routes: 1) mechanical alloying (MA) followed by HIP of metallic capsules, and 2) MA, compaction, pressureless sintering in H2 and subsequent HIPing without encapsulation. Both routes resulted in fully dense materials with homogeneous microstructure and grain sizes of 300 nm and 1 µm, respectively. The content of impurities remained unchanged after HIP, but it increased after sintering due to binder residue. It was not possible to produce large samples by the second route due to difficulties in the uniaxial compaction stage. Flexural strength and fracture toughness measured on samples produced by the first route revealed a suctile-to-brittle-transition temperature (DBTT) of about 900°C. The strength increased from room temperature to 800°C, decreasing significantly in the plastic region. An increase of fracture toughness is observed around the DBTT.
Internacional
Si
Nombre congreso
15th International Conference on PLASMA-FACING MATERIALS and COMPONENTS for FUSION APPLICATIONS
Tipo de participación
970
Lugar del congreso
Aix-en-Provence, Francia
Revisores
Si
ISBN o ISSN
0000-0000
DOI
Fecha inicio congreso
18/05/2015
Fecha fin congreso
22/05/2015
Desde la página
1
Hasta la página
1
Título de las actas
15th International Conference on PLASMA-FACING MATERIALS and COMPONENTS for FUSION APPLICATIONS Program
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: A. Calvo (CEIT and TECNUN (University of Navarra))
  • Autor: N. Ordás (CEIT and TECNUN (University of Navarra))
  • Autor: Jose Ygnacio Pastor Caño (UPM)
  • Autor: Elena Maria Tejado Garrido (UPM)
  • Autor: Teresa Palacios Garcia (UPM)
  • Autor: C. García-Rosales (CEIT and TECNUN (University of Navarra))
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Materiales Estructurales Avanzados y Nanomateriales
  • Centro o Instituto I+D+i: CENTRO INVEST. MATERIALES ESTRUCTURALES (CIME)
  • Departamento: Ciencia de Materiales
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