解析解による溶接HAZ部の応力誘起水素拡散挙動解析と水素感受性評価 The Stress Induced Hydrogen Diffusion Behavior and the Sensitivity of Hydrogen Embrittlement at the Heat Affected Zone of Weld Part Based on Analytical Solution

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  The analytical solution of hydrogen diffusion and concentration around the heat affected zone of weld part was derived by taking account for the effect of residual stress on hydrogen concentration. Based on the theoretical analysis, the sensitivity of hydrogen embrittlement was formulated and it is proportional to DK<sup>2</sup>, where D is diffusion coefficient, K is stress gradient term of residual stress approximated by linear function. It was in good agreement with that previously obtained by numerical analysis.<br>    This result shows that the law of hydrogen sensitivity is commonly valid independent of boundary condition when the distribution of residual stress is approximately written by linear functions of the distance in the heat affected zone. Furthermore the analysis of the period when hydrogen embrittlement becomes remarkable was conducted. This result enables us to predict the behavior of hydrogen embrittlement at the heat affected zone of weldment.<br>

収録刊行物

  • 日本金屬學會誌 = Journal of the Japan Institute of Metals  

    日本金屬學會誌 = Journal of the Japan Institute of Metals 70(6), 489-494, 2006-06-20 

    日本金属学会

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各種コード

  • NII論文ID(NAID)
    10018161247
  • NII書誌ID(NCID)
    AN00062446
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00214876
  • NDL 記事登録ID
    8011116
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-314
  • データ提供元
    CJP書誌  NDL  IR  J-STAGE 
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