Zhu Zhenbo, Huang Hefei, Liu Jizhao, Ye Linfeng, Zhu Zhiyong
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
Materials (Basel). 2020 Jul 14;13(14):3132. doi: 10.3390/ma13143132.
The Hastelloy N alloy, Alloy 800H and 316H stainless steel were irradiated by Xe ion irradiation with energy of 4 MeV at room temperature (peak damage ranging from 0.5 to 10 dpa). The micromechanical properties, hardness and creep plasticity, of these three investigated alloys were characterized before and after irradiation using nanoindentation. The results show that the hardness increases, and creep plasticity degrades with increasing ion dose in all the samples. In comparison, Hastelloy N has good irradiation damage resistance, while that of the 800H and 316H alloys is slightly worse. Additionally, the approximate positive relationship between irradiation hardening and creep plasticity degradation means that the property of creep plasticity of irradiated materials can be reflected from the nanohardness measurement for the heavy ion irradiation cases.
在室温下，用能量为4 MeV的氙离子对哈氏合金N、800H合金和316H不锈钢进行辐照（峰值损伤范围为0.5至10 dpa）。使用纳米压痕对这三种被研究合金在辐照前后的微观力学性能、硬度和蠕变塑性进行了表征。结果表明，所有样品的硬度均随离子剂量增加而增加，蠕变塑性则随离子剂量增加而降低。相比之下，哈氏合金N具有良好的抗辐照损伤性能，而800H合金和316H合金的抗辐照损伤性能稍差。此外，辐照硬化与蠕变塑性降解之间近似呈正相关，这意味着对于重离子辐照情况，可以从纳米硬度测量中反映出辐照材料的蠕变塑性性能。
