Mechanical properties of tungsten alloys with Y2O3 and titanium additions

Aguirre Cebrian, Maria Vega and Martin Sanz, Antonia and Pastor Caño, Jose Ignacio and Llorca Martinez, Francisco Javier and Monge, M.A. and Pareja, R. (2011). Mechanical properties of tungsten alloys with Y2O3 and titanium additions. "Journal of Nuclear Materials", v. 417 (n. 1-3); p. 516. ISSN 0022-3115. https://doi.org/10.1016/j.jnucmat.2010.12.120.

Description

Title: Mechanical properties of tungsten alloys with Y2O3 and titanium additions
Author/s:
  • Aguirre Cebrian, Maria Vega
  • Martin Sanz, Antonia
  • Pastor Caño, Jose Ignacio
  • Llorca Martinez, Francisco Javier
  • Monge, M.A.
  • Pareja, R.
Item Type: Article
Título de Revista/Publicación: Journal of Nuclear Materials
Date: October 2011
ISSN: 0022-3115
Volume: 417
Subjects:
Faculty: E.U.I.T. Aeronáutica (UPM)
Department: Tecnologías Especiales Aplicadas a la Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

In this research the mechanical behaviour of pure tungsten (W) and its alloys (2 wt.% Ti–0.47 wt.% Y2O3 and 4 wt.% Ti–0.5 wt.% Y2O3) is compared. These tungsten alloys, have been obtained by powder metallurgy. The yield strength, fracture toughness and elastic modulus have been studied in the temperature interval of 25 °C to 1000 °C. The results have shown that the addition of Ti substantially improves the bending strength and toughness of W, but it also dramatically increases the DBTT. On the other hand, the addition of 0.5% Y2O3, is enough to improve noticeably the oxidation behaviour at the higher temperatures. The grain size, fractography and microstructure are studied in these materials. Titanium is a good grain growth inhibitor and effective precursor of liquid phase in HIP. The simultaneous presence of Y2O3 and Ti permits to obtain materials with low pores presence

More information

Item ID: 12135
DC Identifier: http://oa.upm.es/12135/
OAI Identifier: oai:oa.upm.es:12135
DOI: 10.1016/j.jnucmat.2010.12.120
Deposited by: Memoria Investigacion
Deposited on: 10 Sep 2012 11:26
Last Modified: 21 Apr 2016 11:19
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