Artículos en revistas:
Microstructural and mechanical characterization of annealed tungsten (W) and potassium-doped tungsten foils
Año:2015
Áreas de investigación
- Ingenierías
Datos
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Descripción
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| Here we show that potassium-doped tungsten foil should be preferred to pure tungsten foil when considering tungsten laminate pipes for structural divertor applications. Potassium-doped tungsten materials are well knownfromthebulb industryand showanenhanced creep and recrystallizationbehaviour that canbe explained by the formationofpotassium-filledbubbles that are surroundingthe elongated grains, leadingto aninterlocking of the microstructure. In this way, the ultra-fine grained (UFG) microstructure of tungsten foil can be stabilized and with it the extraordinary mechanical properties of the foil in terms of ductility, toughness, brittle-to- ductile transition, and radiation resistance. In this paperwe showthe results of three-point bending tests performed at roomtemperature on annealed pure tungsten and potassium-doped tungsten foils (800, 900, 1000, 1100, 1200, 1300, 1400, 1600, 1800, 2000, 2200, and 2400 °C for 1 h in vacuum). The microstructural assessment covers the measurement of the hardness and analyses of fractured surfaces as well as a comparison of the microstructure by optical microscopy. The results showthat there is a positive effect of potassium-doped tungsten foils compared to pure tungsten foil and demonstrate the potential of the doped foil. | |
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Internacional
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JCR del ISI
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Si |
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Título de la revista
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International Journal of Refractory Metals & Hard Materials |
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ISSN
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0263-4368 |
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Factor de impacto JCR
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1,764 |
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Información de impacto
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Datos JCR del año 2013 |
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Volumen
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48 |
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DOI
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10.1016/j.ijrmhm.2014.09.005 |
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Número de revista
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Desde la página
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145 |
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Hasta la página
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149 |
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Mes
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ENERO |
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Ranking
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Participantes
- Autor: Teresa Palacios Garcia UPM
- Autor: Jens Reiser Karlsruhe Institute of Technology, Germany
- Autor: Jan Hoffmann Karlsruhe Institute of Technology, Germany
- Autor: Michael Rieth Karlsruhe Institute of Technology, Germany
- Autor: Andreas Hoffmann Plansee SE, Reutte, Austria
- Autor: Jose Ygnacio Pastor Caño UPM
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
- Creador: Centro o Instituto I+D+i: CENTRO INVEST. MATERIALES ESTRUCTURALES (CIME)