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Grant support

This investigation was supported by Comunidad de Madrid (S-S2009/MAT-1585), EFDA-ITER (WP12-MAT-W ALLOY), Ministerio de Economia y Competitividad of Spain (ENE2012-39787-C06-05 and MAT2012-38541-c02-02). TEM measurements have been made at LABMET, TEM Laboratory associated to the Red de Laboratorios de la Comunidad de Madrid.

Analysis of institutional authors

Palacios, T.Corresponding AuthorPastor, J. Y.AuthorAguirre, M. V.AuthorMartin, A.Author

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June 9, 2019
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Mechanical behavior of tungsten-vanadium-lanthana alloys as function of temperature

Publicated to:Journal Of Nuclear Materials. 442 (1-3): S277-S281 - 2013-11-01 442(1-3), DOI: 10.1016/j.jnucmat.2013.02.006

Authors: Palacios, T; Pastor, J Y; Aguirre, M V; Martin, A; Monge, M A; Munoz, A; Pareja, R

Affiliations

Univ Carlos III Madrid, Dept Fis, Leganes, Spain - Author
Univ Politecn Madrid, EI Aeronaut & Espacio, Dept Tecnol Especiales Aplicadas Aeronaut, E-28040 Madrid, Spain - Author
Univ Politecn Madrid, ETSI Caminos Canales & Puertos, Dept Ciencia Mat CISDEM, E-28040 Madrid, Spain - Author

Abstract

The mechanical behavior of three tungsten (W) alloys with vanadium (V) and lanthana (La2O3) additions (W-4% V, W-1% La2O3, W-4% V-1% La2O3) processed by hot isostatic pressing (HIP) have been compared with pure-W to analyze the influence of the dopants. Mechanical characterization was performed by three point bending (TPB) tests in an oxidizing air atmosphere and temperature range between 77 (immersion tests in liquid nitrogen) and 1273 K, through which the fracture toughness, flexural strength, and yield strength as function of temperature were obtained. Results show that the V and La2O3 additions improve the mechanical properties and oxidation behavior, respectively. Furthermore, a synergistic effect of both dopants results in an extraordinary increase of the flexure strength, fracture toughness and resistance to oxidation compared to pure-W, especially at higher temperatures. In addition, a new experimental method was developed to obtain a very small notch tip radius (around 5-7 mu m) and much more similar to a crack through the use of a new machined notch. The fracture toughness results were lower than those obtained with traditional machining of the notch, which can be explained with electron microscopy, observations of deformation in the rear part of the notch tip. Finally, scanning electron microscopy (SEM) examination of the microstructure and fracture surfaces was used to determine and analyze the relationship between the macroscopic mechanical properties and the micromechanisms of failure involved, depending on the temperature and the dispersion of the alloy. (C) 2013 Elsevier B.V. All rights reserved.

Keywords

Astronomia / físicaEngenharias iEngenharias iiEngenharias iiiEngenharias ivEnsinoGeneral materials scienceInterdisciplinarMateriaisMaterials scienceMaterials science (all)Materials science (miscellaneous)Materials science, multidisciplinaryMedicina iiMining & mineral processingNuclear and high energy physicsNuclear energy and engineeringNuclear science & technology

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Journal Of Nuclear Materials due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2013, it was in position 2/33, thus managing to position itself as a Q1 (Primer Cuartil), in the category Nuclear Science & Technology.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations from Scopus Elsevier, it yields a value for the Field-Weighted Citation Impact from the Scopus agency: 1.03, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 14, 2024)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Field Citation Ratio (FCR) from Dimensions: 2.88 (source consulted: Dimensions Jul 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-07, the following number of citations:

  • WoS: 25
  • Scopus: 29
  • Open Alex: 28

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-07-07:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 29 (PlumX).

Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (PALACIOS GARCIA, TERESA) .

the author responsible for correspondence tasks has been PALACIOS GARCIA, TERESA.