Development of controlled temperature-cycle irradiation technique in JMTR
Development of controlled temperature-cycle irradiation technique in JMTR
复制标题
JMTR可控温度循环辐照技术的发展
DOI：
10.1016/0022-3115(94)91110-x
复制
发表时间：
1994
影响因子：
3.1
通讯作者：
M. Kiritani
中科院分区：
文献类型：
--
作者：
M. Narui;H. Kurishita;H. Kayano;Tsutomu Sagawa;N. Yoshida;M. Kiritani
从基础和工程角度来看，研究中子辐照过程中循环温度变化对辐射引起的微观结构演化以及由此产生的材料性能变化的影响都非常重要。因此，日本材料试验反应堆（JMTR）开发了一种能够进行受控温度循环辐照的技术。该技术满足以下要求：（1）通过改变下限和上限温度，在三种不同条件下进行温度循环辐照； 200⇓400℃、300⇓400℃和300⇓450℃； (2) 24天全辐照的温度循环次数和周期为6次，较低/较高温度下约为44小时/44小时； (3) 每个样品组件的温度应在反应堆启动前保持在较低温度，在关闭期间保持在较高温度，直至反应堆完全断电。本文介绍了辐照装置的细节、成功的结果以及未来改进需要克服的几个问题。
To investigate the effects of cyclic temperature changes during neutron irradiation upon radiation induced microstructure evolution and resulting property changes of materials is very important from both fundamental and engineering viewpoints. Therefore, a technique that allows us to do the controlled temperature-cycle irradiation was developed in the Japan Materials Testing Reactor (JMTR). The technique meets the following requirements: (1) the temperature-cycle irradiation is to be performed under three different conditions by changing lower and upper temperatures; 200⇓400°C, 300⇓400°C and 300⇓450°C; (2) the number and period of the temperature-cycles are to be six for 24-day full irradiation and approximately 44 h/44 h at the lower/upper temperatures; (3) the temperatures of each specimen assembly are to be maintained at the lower temperatures before start-up of the reactor and at the upper temperatures during shutdown until the complete absence of reactor power. In this paper, the details of the irradiation rig, successful results and several problems to be overcome for future improvement are presented.