Effect of cyclic heat loading on pure tungsten for the ITER divertor

M. Fukuda,Y. Seki,K. Ezato,K. Yokoyama,H. Nishi,S. Suzuki

Journal of Nuclear Materials（2020）

引用 12|浏览3

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摘要

•Effect of cyclic heat load and material properties on W monoblock is examined.•W monoblocks manufactured by two different suppliers (ALMT and NSCM) are compared.•The heat removal capability was not degraded in all the examined monoblocks.•ALMT-W exhibited relatively smooth surface and higher resistance to cyclic heat loading.•NSCM-W exhibited severe surface modification and macro-crack formation.

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关键词

Tungsten,ITER divertor outer vertical target,Small-scale W monoblock mock-up,Cyclic heat loading,Surface modification,Macro-crack,Grain structure,Recrystallization,Tensile property

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