Effect of Ti and TiC Alloyants on the Mechanical Properties of W-Based Armour Materials

Tejado Garrido, Elena María and Martín Sanz, Antonia and Pastor Caño, Jose Ignacio (2018). Effect of Ti and TiC Alloyants on the Mechanical Properties of W-Based Armour Materials. "Journal of Nuclear Materials", v. 514 ; pp. 238-246. ISSN 0022-3115. https://doi.org/10.1016/j.jnucmat.2018.12.001.

Description

Title: Effect of Ti and TiC Alloyants on the Mechanical Properties of W-Based Armour Materials
Author/s:
  • Tejado Garrido, Elena María
  • Martín Sanz, Antonia
  • Pastor Caño, Jose Ignacio
Item Type: Article
Título de Revista/Publicación: Journal of Nuclear Materials
Date: 5 December 2018
ISSN: 0022-3115
Volume: 514
Subjects:
Freetext Keywords: Tungsten Alloys, Titanium Alloyants, Plasma-Facing-Material, Ductility, Thermo-Mechanical Properties
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Arquitectura, Construcción y Sistemas Oceánicos y Navales (Dacson)
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The main requirements of tungsten materials for structural divertor applications comprise properties likehigh thermal conductivity, high-temperature strength and stability, high recrystallization temperature,and enough ductility for an operation period of about two years under massive neutron load [1].However, the mechanical properties of tungsten commercial products are still one of the main concernsfor their use in structural armour applications. With the aim of improving this aspect, two W/Ti basedproducts are presented in this paper: (1) a W-Ti alloy with a Ti solid solution and (2) an UFG micro-structure product with TiC dispersed particles; both with the aim of obtaining a suitable fusion armourmaterial with enhanced properties, especially at very high temperatures when pure tungsten suffersstrong thermal degradation.It has been reported that strength and recrystallization control can be improved with dispersed TiCparticles which inhibits the grain growth. Furthermore, bothflexural strength and fracture toughnesswere twice and even three times higher than the ones observed for our reference pure tungsten pro-duced by the same group and technique, which is, indeed, a great success. However, the intrinsic brit-tleness of tungsten cannot be enhanced by particle dispersion or solid solution with Ti. On the contrary,intergranular rupture is enhanced even more, and the DBTT is even higher than that of pure W.

Funding Projects

TypeCodeAcronymLeaderTitle
Horizon 2020633053EUROfusionMAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN EVImplementation of activities described in the Roadmap to Fusion during Horizon 2020 through a Joint programme of the members of the EUROfusion consortium
Government of SpainMAT2015- 70780-C4-1-PUnspecifiedGarcía Ayala, Esperanza MacarenaCompuestos cerámica-metal y aleaciones refractarias de W para su aplicación bajo condiciones de servicio severas: diseño microestructural y nuevas rutas de procesamiento
Madrid Regional GovernmentS2013/MIT-2862-MULTIMATCHALLENGEUnspecifiedGordo Odériz, ElenaMateriales multifuncionales para los retos de la sociedad

More information

Item ID: 53334
DC Identifier: http://oa.upm.es/53334/
OAI Identifier: oai:oa.upm.es:53334
DOI: 10.1016/j.jnucmat.2018.12.001
Official URL: https://www.sciencedirect.com/science/article/pii/S0022311518311656
Deposited by: Memoria Investigacion
Deposited on: 14 Jan 2019 09:34
Last Modified: 14 Jan 2019 10:20
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