High heat load properties of nanostructured, recrystallized W–1.1TiC
High heat load properties of nanostructured, recrystallized W–1.1TiC
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DOI：
10.1016/j.jnucmat.2013.04.094
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发表时间：
2013-11
影响因子：
3.1
通讯作者：
K. Tokunaga;H. Kurishita;H. Arakawa;S. Matsuo;T. Hotta;K. Araki;Y. Miyamoto;T. Fujiwara;K. Nakamura;T. Takida;M. Kato;A. Ikegaya
中科院分区：
文献类型：
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作者：
K. Tokunaga;H. Kurishita;H. Arakawa;S. Matsuo;T. Hotta;K. Araki;Y. Miyamoto;T. Fujiwara;K. Nakamura;T. Takida;M. Kato;A. Ikegaya
利用电子束辐照系统对ITER级W和增韧细晶再结晶W-1.1TiC（TFGR W-1.1TiC）进行了稳态（1973 K，180 s）和重复（723 K-1524 K，380次）热加载实验。在ITER W级中，1973 K附近的辐照导致再结晶和晶粒长大，平均直径达到50-100 μm。重复辐照会导致显著的表面粗糙化、晶界开裂和表面剥落。在另一方面，TFGR W-1.1TiC不表现出任何表面粗糙化或反复热负荷后，虽然在TFGR W-1.1TiC的表面上的晶界可以观察到在约1973 K 180 s的稳态热负荷照射后，开裂。
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.