Estimation of Hydrogen Embrittlement Process by Statistical Analysis of Fracture Time

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  • 破断時間の統計解析による水素脆化の進行挙動の推定
  • 第65回材料と環境討論会 講演大会論文 破断時間の統計解析による水素脆化の進行挙動の推定
  • ダイ65カイ ザイリョウ ト カンキョウ トウロンカイ コウエン タイカイ ロンブン ハダンジカン ノ トウケイ カイセキ ニ ヨル スイソゼイカ ノ シンコウ キョドウ ノ スイテイ

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<p>It may be possible to estimate the hydrogen embrittlement process by statistically analyzing the fracture time of high strength steel. In this study, we derived transition probability λ（t） representing the degradation rate by statistically analyzing the fracture time of high strength steel using a stochastic process model. The analysis revealed that λ（t） decreased rapidly after the start of the test and then became a constant value. This behavior differs from general hydrogen entry behavior, suggesting that the fracture time of high strength steel is not uniquely determined only by the amount of hydrogen in the specimen.</p>

Journal

  • Corrosion Engineering

    Corrosion Engineering 68 (4), 88-91, 2019-04-10

    Japan Society of Corrosion Engineering

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