Effect of Zirconium Addition to Austenitic Stainless Steels on Suppression of Radiation Induced Chromium Segregation at Grain Boundaries under Ion Irradiation

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The effect of Zr addition to austenitic stainless steels on the suppression of radiation induced Cr segregation at grain boundaries under 400keV He<SUP>+</SUP> irradiation was studied. Type 316L stainless steel and steels with addition of 0.07, 0.21 or 0.41 mass% Zr were kept at 1, 423K for 30min, and then they were quenched into the water. Irradiation was done at 773K with the dose rate of 2.4×10<SUP>-4</SUP> dpa/s. The total dose was 0.85 or 3.4dpa. After irradiation, profiles of Cr concentration across the grain boundaries were measured using an analytical electron microscope with 1nm beam diameter. Concentration of Cr at the grain boundary is decreased by radiation induced segregation. However, it increased with the addition of Zr, and the Cr segregation is almost completely suppressed when Zr is added more than 0.21 mass%.<BR>The effect of Zr addition on suppression of Cr segregation was analyzed focussing on the interaction between dissolved Zr atoms and point defects. The effect is based on vacancy trapping by the Zr atom, and the extent to which it suppresses Cr segregation can be empirically evaluated using a radiation induced segregation model by changing the effective vacancy migration energy.

収録刊行物

  • Journal of nuclear science and technology

    Journal of nuclear science and technology 33(7), p.577-581, 1996-07-25

    Atomic Energy Society of Japan

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  • Radiation Induced Segregation at Grain Boundary in an Austenitic Stainless Steel under Ion Irradiation

    Shigenaka Naoto , Ono Shigeki , Isobe Yusuke , HASHIMOTO Tsuneyuki , FUJIMORI Haruo , UCHIDA Syunsuke

    Journal of nuclear science and technology 33(6), p.474-478, 1996-06-25

    J-STAGE 参考文献16件 被引用文献1件

被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    10002075143
  • NII書誌ID(NCID)
    AA00703720
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00223131
  • NDL 記事登録ID
    4060409
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A460
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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