用于核退役的锆合金激光切割研究

IF 2.6 3区 工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY
Jae Sung Shin, Joonsoo Ock, Sungyeol Choi
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引用次数: 0

摘要

我们对锆合金(特别是 Zircaloy-2 和 Zr-2.5%Nb 合金)进行了激光切割研究,这两种合金是加压重水反应堆核燃料通道的组成材料。研究使用 10 毫米厚的板材试样测量了每种材料的最大切割速度、二次排放物量和气溶胶特性。锆合金的切割性能彼此相似。在激光功率为 1-5 kW 时,最大切割速度为 750 至 1900 mm/min,单位长度的二次辐射量为 32 至 53 g/m。与 304 L 不锈钢相比,最大切割速度提高了 1.7-1.9 倍,二次排放量约为不锈钢的 60-70%。分析气溶胶的物理性质,两种锆合金产生的颗粒都较大,气动直径的计数中值为 0.25 μm,比 304 L 不锈钢大约 15-17%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Laser cutting study of zirconium alloys for nuclear decommissioning
We conducted laser cutting studies on zirconium alloys, specifically Zircaloy-2 and Zr-2.5%Nb alloy, which are used as constituent materials in the nuclear fuel channel of a pressurized heavy water reactor. The study measured the maximum cutting speed, amount of secondary emissions, and aerosol characteristics for each material using 10 mm thick plate specimens. The cutting performance of the zirconium alloys was similar to each other. At a laser power of 1–5 kW, the maximum cutting speed ranged from 750 to 1900 mm/min, and the amount of secondary emissions per length ranged from 32 to 53 g/m. Compared to 304 L stainless steel, the maximum cutting speed was 1.7–1.9 times higher, and the amount of secondary emissions was about 60–70 % of that of stainless steel. Analyzing the physical properties of aerosols, both zirconium alloys generated larger particles with a count median aerodynamic diameter of 0.25 μm, which is approximately 15–17 % larger than that of 304 L stainless steel.
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来源期刊
Nuclear Engineering and Technology
Nuclear Engineering and Technology 工程技术-核科学技术
CiteScore
4.80
自引率
7.40%
发文量
431
审稿时长
3.5 months
期刊介绍: Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development
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