期刊
JOURNAL OF NUCLEAR MATERIALS
卷 438, 期 -, 页码 S945-S948出版社
ELSEVIER
DOI: 10.1016/j.jnucmat.2013.01.205
关键词
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Tungsten and tungsten alloys are actually the primary choice as plasma facing materials for future fusion reactors. Thereby, the material's response to the different loading conditions occurring in a tokamak is strongly depending on the material properties and therefore the material's microstructure. This is on the one hand controlled via the manufacturing process and/or the material's composition and on the other hand by the operational conditions causing recrystallization and melting, and subsequently not only a modified microstructure but also locally a modified composition. The influence of the variation in microstructure is addressed and the pros and cons for using the respective materials and tungsten in general in a fusion environment with steady state and transient thermal loads are outlined. While roughening and the related cracking can hardly be avoided, melting will thwart all efforts to establish a high end microstructure with defined directional properties. (C) 2013 Elsevier B.V. All rights reserved.
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