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首页> 美国卫生研究院文献>Materials >Investigation of Particles and Gas Bubbles in Zr–0.8Sn–1Nb–0.3Fe Zr Alloys Irradiated by Krypton Ions
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Investigation of Particles and Gas Bubbles in Zr–0.8Sn–1Nb–0.3Fe Zr Alloys Irradiated by Krypton Ions

机译：rypto离子辐照Zr–0.8Sn–1Nb–0.3Fe Zr合金中的颗粒和气泡的研究

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摘要

Two types of Zr–0.8Sn–1Nb–0.3Fe Zr alloys were irradiated by krypton ions in the temperature range from 320 to 400 °C. The microstructure of the as-received alloys showed that the sizes of Zr crystals and (Zr, Nb)2Fe particles with face-centered cubic (FCC) structure increased from 3.9 μm to 6.0 μm and from 74.6 nm to 89.6 nm, respectively, after cold rolling and subsequent annealing. Kr+ irradiation-induced bubble formation in the Zr matrix was observed. The size of the gas bubbles increased with increasing ion fluence and irradiation temperature. An equation that related the bubble size, ion fluence, and temperature were established. Irradiation-induced amorphization of particles was observed and found to be related to the fabrication process and irradiation parameters. The particles in alloy #1 showed a higher irradiation tolerance than those in alloy #2. The threshold damage dose for the amorphization of particles in alloy #2 was 3.5 dpa at 320 °C and 4.9 dpa at 360 °C. The mechanisms for bubble growth and particle amorphization are also discussed.
机译：k离子在320至400°C的温度范围内辐射了两种Zr–0.8Sn–1Nb–0.3Fe Zr合金。收到的合金的微观结构表明，Zr晶体和具有面心立方（FCC）结构的（Zr，Nb）2Fe颗粒的尺寸分别从3.9μm增加到6.0μm，并且从74.6 nm增加到89.6 nm。冷轧和随后的退火处理。观察到Zr基体中Kr + 辐射诱导的气泡形成。气泡的大小随着离子通量和辐照温度的增加而增加。建立了与气泡大小，离子通量和温度相关的方程。观察到辐照引起的颗粒非晶化，并且发现其与制造过程和辐照参数有关。合金＃1中的颗粒显示出比合金＃2中更高的辐射耐受性。 2号合金中粒子非晶化的阈值破坏剂量在320°C下为3.5 dpa，在360°C下为4.9 dpa。还讨论了气泡生长和颗粒非晶化的机理。

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