[2C01-06] Heat- and Mass-Transfer Characteristic, Engineering Design

[2C06] Grain structure change and damage formation of tungsten exposed to high heat load

*Makoto Fukuda¹, Yohji Seki¹, Koichiro Ezato¹, Hiroshi Nishi¹, Kenji Yokoyama¹, Satoshi Suzuki¹ (1. QST)

Keywords:Fusion reactor, ITER, Divertor, Tungsten, High heat load test

Grain structure change and damage formation behavior of tungsten under ITER divertor relevant heat load will be reported. The examined materials were tungsten armor subjected to a heat load of 20 MW/m² for 300–1000 cycles via electron beam irradiation stand.