• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Scientific reports. >Exploitation of thermal gradients for investigation of irradiation temperature effects with charged particles
【24h】

Exploitation of thermal gradients for investigation of irradiation temperature effects with charged particles

机译：具有带电粒子的辐照温度效应的热梯度的开发

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The effects of radiation damage on materials are strongly dependant on temperature, making it arguably the most significant parameter of concern in nuclear engineering. Owing to the challenges and expense of irradiating and testing materials, material property data is often limited to few irradiation conditions and material variants. A new technique has been developed which enables the investigation of radiation damage of samples subject to a thermal gradient, whereby a wealth of data over a range of irradiation temperatures is produced from a single irradiation experiment. The results produced are practically inaccessible by use of multiple conventional isothermal irradiations. We present a precipitation-hardened copper alloy (CuCrZr) case-study irradiated with a linear temperature gradient between 125 and 440?°C. Subsequent micro-scale post irradiation characterisation (nanoindentation, transmission electron microscopy and atom probe tomography) highlight the capability to observe mechanical and microstructural changes over a wide range of irradiation temperatures. We observed irradiation-softening in CuCrZr that did not occur due to irradiation-enhanced aging of the Cr-precipitates. Excellent reproducibility of the new technique was demonstrated and replicated irradiation-hardening data from several isothermal neutron irradiation studies. Our new technique provides this data at a fraction of the time and cost required by conventional irradiation experiments.
机译：辐射损伤对材料的影响强烈依赖于温度，使其可以说是核工程中最重要的关注参数。由于辐照和测试材料的挑战和费用，材料性质数据通常限于少量照射条件和材料变体。已经开发了一种新技术，其能够调查对热梯度进行的样品的辐射损伤，从而从一系列辐照实验产生了一系列辐照温度的数据。通过使用多种常规等温照射，产生的结果实际上无法进入。我们提出了一种沉淀 - 硬化的铜合金（CUCRZR）案例研究，用线性温度梯度在125和440℃之间照射。随后的微刻度辐射表征（纳米凸缘，透射电子显微镜和原子探测断层扫描）突出了观察到各种照射温度的机械和微观结构变化的能力。我们观察到CUCRZR中的辐照软化，由于辐射增强的Cr沉淀物而没有发生。从几种等温中子辐射研究证明和复制新技术的优异再现性和复制的辐照硬化数据。我们的新技术以常规照射实验所需的时间和成本的一小部分提供此数据。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号