Fission-fusion correlation of void swelling in pure nickel
Fission-fusion correlation of void swelling in pure nickel
复制标题
纯镍中空洞膨胀的裂变-熔合相关性
DOI：
10.1016/0022-3115(88)90513-2
复制
发表时间：
1988
影响因子：
3.1
通讯作者：
N. Yoshida
中科院分区：
文献类型：
--
作者：
T. Muroga;Hideo Watanabe;K. Araki;N. Yoshida
比较了裂变(Joyo)和聚变(RTNS-II)中子辐照退火和冷加工纯镍的微观结构。按dpa计算，聚变中子的膨胀比裂变中子的要大得多。这种差异主要是由于空隙的大小造成的。由于空洞大小与损伤产生率密切相关，推测目前的裂变-聚变差异主要是由损伤产生率的差异引起的。冷加工对膨胀的影响也是损害产出率的函数。本研究表明了伤害产生率在相关研究中的重要性。只有在实现了以高度受控的损伤产生率为参数的裂变和聚变中子辐照之后，才有可能对裂变和聚变中子的pKa谱或变形差异的影响进行定量估计。
Microstructures have been compared in annealed and cold worked pure nickel irradiated with fission (JOYO) and fusion (RTNS-II) neutrons. The swelling is found to be considerably higher for the fusion neutrons than for the fission neutrons on the dpa basis. This difference is due mainly to the void size. Since the void size is found to have a close relation with the damage production rate, it is expected that the present fission-fusion difference is caused mainly by the difference in damage production rate. The effects of cold work on swelling are found to be also a function of the damage production rate. The present study has shown the importance of the damage production rate in the correlation studies. Quantitative estimation of the effects of PKA spectral or transmutative differences for fission and fusion neutrons seems to be possible only after fission and fusion neutron irradiations with highly controlled damage production rate as a parameter are achieved.