Defect accumulation in JPCA and its high purity model alloys irradiated with D-T neutrons
Defect accumulation in JPCA and its high purity model alloys irradiated with D-T neutrons
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JPCA及其高纯模型合金经D-T中子辐照后的缺陷积累
DOI：
10.1016/0022-3115(88)90421-7
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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;Y. Miyamoto;Hideo Watanabe;N. Yoshida
在450℃和200°C的D-T中子辐照剂量为0.15~5.4×1022n/m2的条件下，对JPCA及其四种模型合金的微观结构进行了研究。在450℃时，模型合金中观察到低密度的间隙环和层错四面体。钛和碳的联合添加对环的演变有很大的影响。在200℃时，JPCA和模型合金中观察到高密度的模糊图像和清晰的缺陷图像。密度和剂量依赖关系表明，这些缺陷是由碰撞级联产生的。与快堆和HVEM辐照的数据比较表明，在450℃附近的Fe-Cr-Ni合金中，饱和环数密度几乎与损伤产生率的平方根成正比，与辐照类型无关。这表明，如果适当地包括损伤率效应，就有可能在某些辐照条件下找到一个简单的相关定律。
Microstructures have been examined in JPCA and its four model alloys irradiated with D-T neutrons at 450 and 200°C to fluences of 0.15 to 5.4 × 1022n/m2. At 450°C, a low density of interstitial loops and stacking fault tetrahedra are observed in the model alloys. The combined addition of titanium and carbon has a substantial effect on loop evolution. At 200°C, high densities of faint images as well as clear defect images are observed in JPCA and the model alloys. The density and dose dependence suggest that these defects are produced from collision cascades. Comparison with the data obtained by fast reactor and HVEM irradiations shows that, in Fe-Cr-Ni alloys near 450 ° C, the saturation loop number density is almost proportional to the square root of the damage production rate, irrespective of the irradiation type. This suggests the possibility of finding a simple correlation law for some irradiation conditions, if the damage rate effects are appropriately included.