Investigation of Delayed Fracture Evaluation Method Simulating Processing Forming Part

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  • 成形部を模擬した遅れ破壊評価手法の検討
  • 第65回材料と環境討論会 講演大会論文 成形部を模擬した遅れ破壊評価手法の検討
  • 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 セイケイブ オ モギ シタ オクレ ハカイ ヒョウカ シュホウ ノ ケントウ

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Abstract

<p>Application of the high strength steel sheet to complicated forming parts has been studied as the weight of automobiles is reduced. Complex strain after forming may affect delayed fracture. Therefore, in this research, we devised a new delayed fracture evaluation method using a forming prediction technology, a forming limit diagram. Forming limit diagram was prepared and stress and hydrogen were applied to each forming mode （single axis, plane strain, biaxial strain）, and crack generation was evaluated. From the results of this study, it was found that the delayed fracture can be evaluated by the method using the forming limit diagram.</p>

Journal

  • Zairyo-to-Kankyo

    Zairyo-to-Kankyo 68 (5), 116-119, 2019-05-10

    Japan Society of Corrosion Engineering

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