Cita:
Journal of Nuclear Materials 442, Issues 1–3, Supplement 1, November (2013) S229–S232
ISSN:
0022-3115
DOI:
10.1016/j.jnucmat.2013.03.039
Agradecimientos:
The Spanish Ministry of Economy and Competitiveness (project
ENE2012-39787-C06-05), the Comunidad de Madrid through the
program ESTRUMAT-CM (Grant S2009/MAT-1[5]85), and the European
Commission through the European Fusion Development
W–4V–1La₂O₃ and W–4Ti–1La₂O₃ (wt.%) alloys have been produced by mechanical alloying and subsequent hot isostatic pressing. Electron microscopy observations revealed that these alloys exhibit a submicron grain structure with a dispersion of La oxide nanoparticW–4V–1La₂O₃ and W–4Ti–1La₂O₃ (wt.%) alloys have been produced by mechanical alloying and subsequent hot isostatic pressing. Electron microscopy observations revealed that these alloys exhibit a submicron grain structure with a dispersion of La oxide nanoparticles. Large V or Ti pools with martensitic characteristics are found segregated in the interstices between the W particles of the respective alloys. Microhardness tests were carried out over the temperature range 300–1073 K in vacuum. The microhardness–temperature curve for W–4V–1La₂O₃ exhibited the expected decreasing trend with increasing temperature although the microhardness stayed constant between ~473 and 773 K. The W–4Ti–1La₂O₃ presented quite different temperature dependence with an anomalous microhardness increase for temperatures above ~473 K.[+][-]
Nota:
This study is presented of: The Fifteenth International Conference on Fusion Reactor Materials (ICFRM-15) was held October 16–22, 2011, at the Charleston Marriott Hotel in Charleston, South Carolina
