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    National Tsing Hua University Institutional Repository > 原子科學院  > 工程與系統科學系 > 期刊論文 >  14 MeV nickel-ion irradiated HT-9 ferritic steel with and without helium pre-implantation

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/47951

    Title: 14 MeV nickel-ion irradiated HT-9 ferritic steel with and without helium pre-implantation
    Authors: Kai,J. J.;Kulcinski,G. L.
    教師: 開執中
    Date: 1990
    Publisher: Elsevier
    Relation: Journal of Nuclear Materials, Elsevier, Volume 175, Issue 3, 2 December 1990, Pages 237-243
    Keywords: Steel -- Radiation Effects
    Ferroalloys - Ion Implantation
    Nuclear Reactors - Materials
    Abstract: Two sets of HT-9 specimens were irradiated with 14 MeV nickel ions. One set of specimens were irradiated in the temperature range from 300 to 600°C and up to a peak dose level of 200 dpa and the other set of specimens were uniformly preimplanted with 100 appm of helium and then were irradiated at temperatures of 400, 500, and 600°C up to 60 dpa. The results indicated that there was virtually no void swelling at all in no helium specimens and even with 100 appm helium pre-implantation the maximum local swelling was found to be 0.1% in the specimens irradiated at 500°C to 60 dpa. This result further demonstrated the superior void swelling resistance of HT-9 ferritic steel and it is also concluded that free gas atoms are essential to the formation of cavities in heavy-ion irradiated HT-9. Other microstructural features resulting from the irradiation were also examined in detail, including dislocation loops and precipitates.
    URI: http://www.elsevier.com/
    Appears in Collections:[工程與系統科學系] 期刊論文

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