Influence of recrystallization on thermal shock resistance of various tungsten grades

Thermal shock resistance of various tungsten grades (different manufacturing technologies and heat treatments) was examined under plasma disruption conditions, especially in the cracking regime, i.e. below the melting threshold. The tests have been simulated with the electron beam test facility JUDI...

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Published inJournal of nuclear materials Vol. 363-365; pp. 1099 - 1103
Main Authors Uytdenhouwen, I., Decréton, M., Hirai, T., Linke, J., Pintsuk, G., Van Oost, G.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Amsterdam Elsevier B.V 15.06.2007
Elsevier
Subjects
Applied sciences
Controled nuclear fusion plants
Disruption
Divertor
Energy
Energy. Thermal use of fuels
Erosion
Exact sciences and technology
Installations for energy generation and conversion: thermal and electrical energy
Thermal shock
Tungsten
52.25.Vy
Tungsten
Thermal shock
52.40.Hf
Divertor
Disruption
Erosion
Degradation
Plasma
Heat treatment
Test facility
Impact strength
Recrystallization
Cracking
Manufacturing
Comparative study
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Summary:Thermal shock resistance of various tungsten grades (different manufacturing technologies and heat treatments) was examined under plasma disruption conditions, especially in the cracking regime, i.e. below the melting threshold. The tests have been simulated with the electron beam test facility JUDITH. The comparison of the thermal shock resistance showed that sintered tungsten appeared to be better than the deformed tungsten material and clear degradation after recrystallization was found. Damage processes linked to the mechanical properties of W are discussed.
Bibliography:ObjectType-Article-2
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SourceType-Scholarly Journals-2
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ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2007.01.146