| 镍合金中铝基残芯的中子标记成像检出灵敏度 |
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| 引用本文： | 李航,温伟伟,王胜,邹宇斌,郭之虞,唐国有,陆元荣,吴士平,杨芬. 镍合金中铝基残芯的中子标记成像检出灵敏度[J]. 核技术, 2012, 0(1): 17-20 |
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| 作者姓名： | 李航 温伟伟 王胜 邹宇斌 郭之虞 唐国有 陆元荣 吴士平 杨芬 |
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| 作者单位： | 北京大学核物理与核技术国家重点实验室;哈尔滨工业大学材料科学与工程学院 |
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| 基金项目： | 国家重点基础研究发展计划(2010CB833106);国家自然科学基金(10735020);国家自然科学基金(10875005)项目资助 |
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| 摘 要： | 航空发动机叶片的型芯残留检测是铸造过程中的一项重要环节,与发动机叶片的工作安全性紧密相关。由于X射线难于透过镍基底发动机叶片,中子的高穿透性使中子成像在发动机叶片检测上更具优势。本文将中子标记成像运用于残芯检出,通过理论计算和中子成像实验探究了中子标记成像对简单结构镍合金中残芯的检出能力。结果表明,中子标记成像适用于简单结构的残芯检出,并具有很高的灵敏度。
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| 关 键 词： | 中子成像 钆标记 航空发动机叶片 铝基残芯 |
Detection of residual Al-base core in Ni alloy with Gd-tagging neutron radiography |
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| LI Hang,WEN Weiwei,WANG Sheng,ZOU Yubin,GUO Zhiyu,TANG Guoyou,LU Yuanrong,WU Shiping,YANG Fen. Detection of residual Al-base core in Ni alloy with Gd-tagging neutron radiography[J]. Nuclear Techniques, 2012, 0(1): 17-20 |
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| Authors: | LI Hang WEN Weiwei WANG Sheng ZOU Yubin GUO Zhiyu TANG Guoyou LU Yuanrong WU Shiping YANG Fen |
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| Affiliation: | 1(State Key Laboratory of Nuclear Physics and Nuclear Technology,Beijing University,Beijing 100871,China) 2(School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China) |
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| Abstract: | Detection of residual aluminum-base core in nickel alloy is important for manufacturing blades of an aero-engine.Because of the strong penetrability,neutrons are more effective than X-rays to detect residual material in the nickel alloy blade.In this paper,both theoretical calculation and experiments on an accelerator-based neutron source at Peking University are used to verify the feasibility of Gd-tagging neutron radiography in detecting residual aluminum-base core in the nickel alloy.The results show that the technique can achieve a sensitivity of 0.2 mg for the residual core detection. |
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| Keywords: | Neutron radiography Gd-tagging Aero-engine blades Residual aluminum-base core |
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