论文标题
检查辐射温度对缺陷产生的影响和位错环的性质
Examining the Effects of Irradiation Temperature on Defect Generation and the Nature of Dislocation Loops
论文作者
论文摘要
与来自LWR的不锈钢内部物质存在的大量辐照材料数据不同，快速中子通量和辐照温度〜330oC，Candu反应器是独一无二的，具有高热光谱不锈钢组件的高核心。特别是，CANDU设计包含一个奥氏体不锈钢Calandria容器，该容器含有60-80oc的重水调节器。本文探讨了低（60-80oC）和中等（300-360oC）辐照温度对辐射诱导的缺陷和缺陷下沉的影响，无论是在微观结构和304L级不锈钢级的机械性能方面，用3 MEV质子辐照。最先进的显微镜已应用于表征辐照缺陷，并执行纳米注册以提供与机械性能的联系。假设开发的间隙类型是温度依赖性的，并且缺陷环的形成与辐射诱导的隔离量密切相关。
Unlike the vast amount of irradiated material data that exists for stainless steel internals from LWRs, with high fast neutron flux and an irradiation temperature of~330oC, the CANDU reactor is unique with a high thermal spectrum stainless steel components peripheral to the core. In particular, the CANDU design contains an austenitic stainless steel calandria vessel, which contains the heavy water moderator at a temperature of 60-80oC. This article explores the effects of low (60-80oC) and moderate (300-360oC) irradiation temperature on irradiation induced defects and defect sinks, both in terms of microstructure and mechanical properties of Grade 304L stainless steel, irradiated with 3 MeV protons. State-of-the-art microscopy has been applied to characterize the irradiation defects, and nano-indentation performed to provide a link with the mechanical properties. It is hypothesized that the interstitial type of loops that develop is highly temperature dependent, and the formation of the defect loops is strongly linked with the amount of radiation induced segregation.
