In this study, we carried out the pre-irradiation of a dispersion-strengthened W-2wt.%Y₂O₃ alloy with good mechanical properties with high-energy Fe-ions instead of neutrons. The effect of this pre-irradiation on the D₂ retention behavior of the alloy was investigated. A maximum of 10²² D/m² was irradiated onto the samples using 5-keV D₂ ions, and Fe pre-irradiation was carried out up to an ion fluence of 4 × 10¹⁸/m² with 1 MeV energy. For comparison, commercial pure W was also studied. The Fe-ion pre-irradiation process increased the D₂ retention in both pure W and the W–Y₂O₃ alloy. However, this D₂ retention was independent of the pre-irradiation dose. In addition, the formation of He bubbles in the W–Y₂O₃ alloy caused by the irradiation at 1.8 × 10²¹ He/m² and high temperatures of 773, 973, and 1173 K was also investigated. When the irradiation dose exceeded 1.5 × 10²⁰ He/m², visible He bubbles were formed, and He bubbles grew and void swelling increased with an increase in the irradiation dose. Compared to pure W, the W–Y₂O₃ alloy showed suppressed void swelling. This can be attributed to the dispersion of vacancies and He atoms due to the He irradiation.

在这项研究中，我们用高能Fe离子代替中子对具有良好机械性能的弥散强化W-2wt。％Y ₂ O ₃合金进行了预辐照。研究了这种预辐照对合金D ₂保留行为的影响。使用5-keV D ₂离子最多照射10 ²² D / m ²到样品上，并使用1 MeV能量对Fe进行预辐射，直到离子通量达到4×10 ¹⁸ / m ²为止。为了比较，还研究了商业纯W。Fe离子预辐照过程增加了纯W和W–Y ₂ O中D _2的保留₃合金。然而，该D ₂保留与照射前剂量无关。此外，还研究了由W × Y ₂ O ₃合金在1.8×10 ²¹ He / m ²的辐照以及773、973和1173 K的高温下引起的He气泡的形成。当照射剂量超过1.5×10 ²⁰ He / m ^2时，形成可见的He气泡，并且随着照射剂量的增加，He气泡增大并且空隙膨胀增加。与纯W相比，W-Y ₂ O ₃合金显示出抑制的溶胀。这可以归因于由于He辐射而导致的空位和He原子的分散。