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Gd含量對06Cr19Ni10不銹鋼熱中子屏蔽性能及微觀組織的影響
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1.電子科技大學機械與電氣工程學院 四川成都;2.中國核動力研究設計院 反應堆燃料及材料重點實驗室 四川成都

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Effect of Gd content on thermal neutron shielding performance and microstructure of 06Cr19Ni10 stainless steel
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1.School of Mechanical and Electrical Engineering,University of Electronic Science and Technology of China,Chengdu;2.National Key Laboratory of Nuclear Fuel and Materials,Nuclear Power Institute of China,Chengdu Sichuan

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    摘要:

    針對核電站對中子屏蔽材料結構功能一體化的需求，開展了Gd含量對06Cr19Ni10不銹鋼熱中子屏蔽性能及微觀組織的影響研究，通過熱中子屏蔽計算仿真分析，并以此為指導開展了不同Gd含量的Gd-06Cr19Ni10熔煉和軋制試驗，采用OM、SEM等方法對不銹鋼試樣進行分析檢測，結果表明：Gd的添加可以細化06Cr19Ni10不銹鋼晶粒，但易形成脆性的Ni-Gd第二相，隨著Gd含量的提高，Ni-Gd第二相面積百分數(shù)也明顯增加，使得06Cr19Ni10不銹鋼塑性下降，軋制性能明顯降低。結合熱中子屏蔽計算分析和軋制試驗結果，認為Gd含量為1.7wt.%左右時Gd-06Cr19Ni10可以獲得較為均衡的熱中子屏蔽性能和材料軋制性能。

    Abstract:

    In view of the requirement of nuclear power plant for the integration of structure and function of neutron shielding materials, the influence of Gd content on thermal neutron shielding performance and microstructure of 06Cr19Ni10 stainless steel was studied. Based on Thermal neutron shielding calculation and simulation analysis, Gd-06Cr19Ni10 melting and rolling tests with different Gd contents were carried out. The results from OM and SEM show that the addition of Gd can refine the grain size of 06Cr19Ni10 stainless steel, but it is easy to form the brittle Ni-Gd second phase. With the increase of Gd content, the area percentage of Ni-Gd second phase also increases obviously, which makes the plasticity of 06Cr19Ni10 stainless steel decrease, the rolling property is obviously reduced. Combined with Thermal neutron shielding calculation and rolling test results, it is considered that Gd-06Cr19Ni10 can obtain relatively balanced thermal neutron shielding performance and rolling performance when Gd content is about 1.7 wt.%.

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谷明非,黃大貴,趙勇,劉云明,王錄全. Gd含量對06Cr19Ni10不銹鋼熱中子屏蔽性能及微觀組織的影響[J].稀有金屬材料與工程,2022,51(12):4726~4732.[Gu Mingfei, Huang Dagui, Zhao Yong, Liu Yunming, Wang Luquan. Effect of Gd content on thermal neutron shielding performance and microstructure of 06Cr19Ni10 stainless steel[J]. Rare Metal Materials and Engineering,2022,51(12):4726~4732.]
DOI：10.12442/j. issn.1002-185X.20210974

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  • 收稿日期:2021-11-09
  • 最后修改日期:2022-01-04
  • 錄用日期:2022-01-17
  • 在線發(fā)布日期: 2023-01-19
  • 出版日期: 2022-12-30