TY - JOUR
T1 - High heat load properties of nanostructured, recrystallized W-1.1TiC
AU - Tokunaga, K.
AU - Kurishita, H.
AU - Arakawa, H.
AU - Matsuo, S.
AU - Hotta, T.
AU - Araki, K.
AU - Miyamoto, Y.
AU - Fujiwara, T.
AU - Nakamura, K.
AU - Takida, T.
AU - Kato, M.
AU - Ikegaya, A.
PY - 2013
Y1 - 2013
N2 - Steady state (1973 K, 180 s) and repeated (723 K-1524 K, 380 times) heat loading experiments of ITER grade W and toughened, fine-grained, recrystallized W-1.1TiC (TFGR W-1.1TiC) have been performed using an electron beam irradiation system. In ITER grade W, the irradiation around 1973 K causes recrystallization and grain growth up to the average diameters of 50-100 μm. Repeated irradiations cause significant surface roughening, cracking at grain boundaries and surface exfoliation. On the other hand, TFGR W-1.1TiC does not exhibit any surface roughening or cracking after repeated heat loading although grain boundaries on the surface of TFGR W-1.1TiC can be observed after irradiation at around 1973 K 180 s by steady state heat loading.
AB - Steady state (1973 K, 180 s) and repeated (723 K-1524 K, 380 times) heat loading experiments of ITER grade W and toughened, fine-grained, recrystallized W-1.1TiC (TFGR W-1.1TiC) have been performed using an electron beam irradiation system. In ITER grade W, the irradiation around 1973 K causes recrystallization and grain growth up to the average diameters of 50-100 μm. Repeated irradiations cause significant surface roughening, cracking at grain boundaries and surface exfoliation. On the other hand, TFGR W-1.1TiC does not exhibit any surface roughening or cracking after repeated heat loading although grain boundaries on the surface of TFGR W-1.1TiC can be observed after irradiation at around 1973 K 180 s by steady state heat loading.
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U2 - 10.1016/j.jnucmat.2013.04.094
DO - 10.1016/j.jnucmat.2013.04.094
M3 - Article
AN - SCOPUS:84884907265
SN - 0022-3115
VL - 442
SP - S297-S301
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1-3 SUPPL.1
ER -