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用重离子辐照模拟和正电子湮没寿命技术研究了改进型 316L不锈钢在 21和 33dpa辐照剂量下的辐照损伤在室温到 802°C温度范围随辐照温度变化和室温下 0—100dpa剂量范围随辐照剂量变化. 在 580°C左右实验观察到辐照肿胀峰, 在 21和 33dpa辐照剂量下相应的空位团分别由14和 19个空位组成, 尺度分别为 0. 68和 0. 82nm. 空位团尺寸随辐照剂量增加, 在 100dpa时空位团由 8个空位组成, 尺度为 0. 55nm. 实验结果表明, 在改进型 316L不锈钢中辐照损伤随辐照温度变化更灵敏.
The irradiation damage of the modified 316L stainless steel irradiated with 21 and 33 dpa was studied by using the technique of heavy ion irradiation and positron annihilation. The change of the irradiation temperature range from room temperature to 802 ° C with the irradiation temperature and the dose range from 0 to 100 dpa at room temperature With the radiation dose changes at about 580 ° C experiment observed radiation swelling peak at 21 and 33dpa irradiation dose corresponding vacancies were 14 and 19 vacancies, respectively, the scale of 0.68 and 0. 82nm .The size of the vacancy cluster increased with irradiation dose, the vacancy cluster was composed of 8 vacancies at 100dpa, and the scale was 0. 55nm.The experimental results showed that the irradiation damage in the modified 316L stainless steel was more sensitive to the change of irradiation temperature.