纳米压痕技术研究堆内构件材料304NG不锈钢的三束辐照效应  

Investigation of Triple Beam Irradiation Effect for Reactor Internal Material 304NG Stainless Steel by Nano-indentation Technique

作　　者：朱桐宇[1] 范平[2] 马海亮 张乔丽[2] 左(走翼) 郑永男[2] 温阿丽 白若玉 袁大庆[2] 

机构地区：[1]中核四0四有限公司,甘肃兰州732850 [2]中国原子能科学研究院核物理研究所,北京102413

出　　处：《原子能科学技术》2017年第9期1639-1643,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(91126002);国家科技重大专项资助项目(2012ZX06004-005)

摘　　要：在中国原子能科学研究院的三束辐照实验平台上,对国产堆内构件材料核级控氮304NG不锈钢进行重离子、氢和氦同时辐照,并采用连续刚度纳米压痕技术测量了辐照前后样品的硬度和弹性模量的变化。结果表明,6dpa下,随着辐照温度的升高,辐照硬化减弱;300℃下,随着辐照剂量的增加,辐照硬化增大,高剂量情况下,氢、氦注入区的辐照硬化更显著,表明存在氢、氦增强硬化效应。Utilizing the heavy ion,hydrogen and helium triple beam irradiation experiment platform at China Institute of Atomic Energy,the irradiation experiments for the domestic nuclear grade 304 NG stainless steel which is a kind of nuclear reactor internal materials were carried out with different doses and different temperatures.The hardness and elastic modulus of the samples before and after irradiation were measured by nanoindentation with continuous stiffness measurement technique.The results show that under 6 dpa,with the increase of irradiation temperature,the irradiation hardening becomes weakened.Under 300 ℃ ,the irradiation hardening increases with the irradiation dose.After withstanding higher irradiation dose,the irradiation hardening of hydrogen and helium injected range is more significant,indicating the hydrogen and helium enhance hardening effect.

关 键 词：三束辐照 辐照损伤 304NG 纳米压痕技术 

分 类 号：O483[理学—固体物理] TL341[理学—物理]