• Title/Summary/Keyword: 소듐

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폐소듐 처리 연구

  • Kim, Byeong-Ho;Nam, Ho-Yun;Geum, Dong-Gwon;Choe, Yong-Ho;Im, Gwang-Muk;Jeon, In
    • Proceedings of the Korean Radioactive Waste Society Conference
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    • 2012.05a
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    • pp.273-274
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    • 2012

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Evaluation of Microstructural and Mechanical Property of Medium-sized HT9 Cladding Forged Material for Sodium-cooled Fast Reactor (소듐냉각고속로 피복관용 중형 HT9 단조품 소재의 미세조직 및 기계적 특성 평가)

  • Kim, Jun-Hwan;Lee, Kang-Soo;Kim, Sung-Ho;Lee, Chan-Bock
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.10 no.1
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    • pp.21-26
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    • 2012

  • Microstructural and mechanical property were evaluated at the medium-sized HT9 (12Cr-1MoWV) forged steel which was considered as primary candidate for the fuel cladding in sodium-cooled fast reactor (SFR). Material was forged at $1170^{\circ}C$ after the induction melting to make round bar as 160mm diameter, 7000mm length then the radial distribution of microstructure as well as microhardness was evaluated. The results showed that overall microstructure exhibited as ferrite-martensite structure, where small amount (2~3%) of delta ferrite was formed throughout the specimen and maximum 15% of transformed ferrite was formed at the center, where it gradually decreased toward the radial direction. Sensitivity analysis of the cooling curve and Time-Temperature-Transformation (TTT) diagram revealed that formation of transformed ferrite could be avoided when the diameter was decreased down to 120mm.

  • https://doi.org/10.7733/jkrws.2012.10.1.021 인용 PDF KSCI