Point defect processes in neutron irradiated Ni, Fe–15Cr–16Ni and Ti-added modified SUS316SS
Point defect processes in neutron irradiated Ni, Fe–15Cr–16Ni and Ti-added modified SUS316SS
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DOI：
10.1080/14786435.2012.753484
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发表时间：
2013-05
影响因子：
1.6
通讯作者：
M. Horiki;T. Yoshiie;K. Sato;Q. Xu
中科院分区：
文献类型：
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作者：
M. Horiki;T. Yoshiie;K. Sato;Q. Xu
日本材料试验堆和比利时反应堆2在0.3 dpa以下的中子辐照后检查了Ni、Fe-15Cr-16Ni和添加Ti的改性SUS316SS（改性SUS316）中的缺陷结构，以比较它们的缺陷结构演变。发现这些样本之间的间隙型位错环（I 环）、堆垛层错四面体（SFT）和空隙的生长行为有很大不同。 Ni 中 I 环的形成温度低于 Fe-15Cr-16Ni 和改性 SUS316，并且 Ni 中发生的膨胀比 Fe-15Cr-16Ni 中更多。最后，改性SUS316没有出现空洞。这些结果根据 I 回路能量进行了分析。 Ni 和改性 SUS316 的分析结果与实验观察之间存在很大差异，这表明直接从碰撞级联形成无故障的 I 环。在 Fe-15Cr-16Ni 和改性 SUS316 中检测到 SFT 的生长，并且可以通过合金元素吸收导致的 SFT 位错偏差的变化来解释。
The defect structures in Ni, Fe–15Cr–16Ni and Ti-added modified SUS316SS (modified SUS316) were examined after neutron irradiation below 0.3 dpa by the Japan Materials Testing Reactor and Belgian Reactor 2 to compare their defect structural evolution. The growth behaviour of interstitial-type dislocation loops (I-loops), stacking fault tetrahedra (SFTs) and voids was found to be quite different among these specimens. I-loops developed at lower temperatures in Ni than in Fe–15Cr–16Ni and modified SUS316, and more swelling occurred in Ni than in Fe–15Cr–16Ni. Finally, there were no voids in modified SUS316. These results were analysed in terms of the I-loop energy. A large discrepancy was found between the analytical results and experimental observations for Ni and modified SUS316, which suggests the formation of unfaulted I-loops directly from collision cascades. The growth of SFTs was detected in Fe–15Cr–16Ni and modified SUS316, and can be explained by a change in the dislocation bias of SFTs resulting from the absorption of alloying elements.